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214623220 = 22574013823
BaseRepresentation
bin11001100101011…
…10001111110100
3112221211222201011
430302232033310
5414420420340
633144042004
75214160450
oct1462561764
9487758634
10214623220
11100170669
125ba63304
13356072b6
142070b660
1513c970ea
hexccae3f4

214623220 has 48 divisors (see below), whose sum is σ = 516515328. Its totient is φ = 73382400.

The previous prime is 214623209. The next prime is 214623257. The reversal of 214623220 is 22326412.

It is a junction number, because it is equal to n+sod(n) for n = 214623191 and 214623200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54229 + ... + 58051.

It is an arithmetic number, because the mean of its divisors is an integer number (10760736).

Almost surely, 2214623220 is an apocalyptic number.

214623220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214623220 is an abundant number, since it is smaller than the sum of its proper divisors (301892108).

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

214623220 is a wasteful number, since it uses less digits than its factorization.

214623220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 214623220 is about 14650.0245733582. The cubic root of 214623220 is about 598.7224855623.

Adding to 214623220 its reverse (22326412), we get a palindrome (236949632).

The spelling of 214623220 in words is "two hundred fourteen million, six hundred twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 401 802 1604 2005 2807 3823 4010 5614 7646 8020 11228 14035 15292 19115 26761 28070 38230 53522 56140 76460 107044 133805 267610 535220 1533023 3066046 6132092 7665115 10731161 15330230 21462322 30660460 42924644 53655805 107311610 214623220