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215230512030 = 235139921432393
BaseRepresentation
bin1100100001110010111…
…1001111101110011110
3202120112210011212020120
43020130233033232132
512011243002341110
6242513040455410
721356420111112
oct3103457175636
9676483155216
10215230512030
1183308016326
123586831a566
13173b0846581
14a5bab8b742
1558ea61d870
hex321cbcfb9e

215230512030 has 64 divisors (see below), whose sum is σ = 517379788800. Its totient is φ = 57303058176.

The previous prime is 215230512011. The next prime is 215230512041. The reversal of 215230512030 is 30215032512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89940514 + ... + 89942906.

It is an arithmetic number, because the mean of its divisors is an integer number (8084059200).

Almost surely, 2215230512030 is an apocalyptic number.

215230512030 is an abundant number, since it is smaller than the sum of its proper divisors (302149276770).

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

215230512030 is a wasteful number, since it uses less digits than its factorization.

215230512030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 215230512030 its reverse (30215032512), we get a palindrome (245445544542).

The spelling of 215230512030 in words is "two hundred fifteen billion, two hundred thirty million, five hundred twelve thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 1399 2143 2393 2798 4197 4286 4786 6429 6995 7179 8394 10715 11965 12858 13990 14358 20985 21430 23930 32145 35895 41970 64290 71790 2998057 3347807 5128199 5996114 6695614 8994171 10043421 10256398 14990285 15384597 16739035 17988342 20086842 25640995 29980570 30769194 33478070 44970855 50217105 51281990 76922985 89941710 100434210 153845970 7174350401 14348700802 21523051203 35871752005 43046102406 71743504010 107615256015 215230512030