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220401230 = 25737431979
BaseRepresentation
bin11010010001100…
…00111001001110
3120100201112122112
431020300321032
5422410314410
633511544022
75314244120
oct1510607116
9510645575
10220401230
11103457785
126198b012
133687b23a
14213b3210
1514539105
hexd230e4e

220401230 has 64 divisors (see below), whose sum is σ = 476720640. Its totient is φ = 71777664.

The previous prime is 220401221. The next prime is 220401239. The reversal of 220401230 is 32104022.

It is an interprime number because it is at equal distance from previous prime (220401221) and next prime (220401239).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220401239) 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, 110381 + ... + 112359.

It is an arithmetic number, because the mean of its divisors is an integer number (7448760).

Almost surely, 2220401230 is an apocalyptic number.

220401230 is an abundant number, since it is smaller than the sum of its proper divisors (256319410).

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

220401230 is a wasteful number, since it uses less digits than its factorization.

220401230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220401230 is about 14845.9162735077. The cubic root of 220401230 is about 604.0478431614.

Adding to 220401230 its reverse (32104022), we get a palindrome (252505252).

The spelling of 220401230 in words is "two hundred twenty million, four hundred one thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 37 43 70 74 86 185 215 259 301 370 430 518 602 1295 1505 1591 1979 2590 3010 3182 3958 7955 9895 11137 13853 15910 19790 22274 27706 55685 69265 73223 85097 111370 138530 146446 170194 366115 425485 512561 595679 732230 850970 1025122 1191358 2562805 2978395 3148589 5125610 5956790 6297178 15742945 22040123 31485890 44080246 110200615 220401230