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214768020 = 223519238191
BaseRepresentation
bin11001100110100…
…01100110010100
3112222010100100010
430303101212110
5414440034040
633151120220
75215332555
oct1463214624
9488110303
10214768020
1110025a435
125bb13070
133565818c
142074832c
1513cc4e80
hexccd1994

214768020 has 96 divisors (see below), whose sum is σ = 660602880. Its totient is φ = 51891840.

The previous prime is 214768013. The next prime is 214768027. The reversal of 214768020 is 20867412.

It is an interprime number because it is at equal distance from previous prime (214768013) and next prime (214768027).

It is a super-2 number, since 2×2147680202 = 92250604829440800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214768027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22125 + ... + 30315.

It is an arithmetic number, because the mean of its divisors is an integer number (6881280).

Almost surely, 2214768020 is an apocalyptic number.

214768020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214768020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330301440).

214768020 is an abundant number, since it is smaller than the sum of its proper divisors (445834860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

214768020 is a wasteful number, since it uses less digits than its factorization.

214768020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8245 (or 8243 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 214768020 is about 14654.9657113212. The cubic root of 214768020 is about 598.8571021342.

The spelling of 214768020 in words is "two hundred fourteen million, seven hundred sixty-eight thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 23 30 38 46 57 60 69 76 92 95 114 115 138 190 228 230 276 285 345 380 437 460 570 690 874 1140 1311 1380 1748 2185 2622 4370 5244 6555 8191 8740 13110 16382 24573 26220 32764 40955 49146 81910 98292 122865 155629 163820 188393 245730 311258 376786 466887 491460 565179 622516 753572 778145 933774 941965 1130358 1556290 1867548 1883930 2260716 2334435 2825895 3112580 3579467 3767860 4668870 5651790 7158934 9337740 10738401 11303580 14317868 17897335 21476802 35794670 42953604 53692005 71589340 107384010 214768020