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14897806938 = 2327196222977
BaseRepresentation
bin11011101111111101…
…00111111001011010
31102110020212000011100
431313332213321122
5221002314310223
610502143412230
71035116161320
oct156776477132
942406760140
1014897806938
116355472943
122a792b4076
1315356182a1
14a14821d10
155c2d7a043
hex377fa7e5a

14897806938 has 48 divisors (see below), whose sum is σ = 38831382720. Its totient is φ = 4032488448.

The previous prime is 14897806901. The next prime is 14897806993. The reversal of 14897806938 is 83960879841.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3109095 + ... + 3113882.

It is an arithmetic number, because the mean of its divisors is an integer number (808987140).

Almost surely, 214897806938 is an apocalyptic number.

14897806938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

14897806938 is an abundant number, since it is smaller than the sum of its proper divisors (23933575782).

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

14897806938 is a wasteful number, since it uses less digits than its factorization.

14897806938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223011 (or 6223008 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 14897806938 in words is "fourteen billion, eight hundred ninety-seven million, eight hundred six thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 7 9 14 18 19 21 38 42 57 63 114 126 133 171 266 342 399 798 1197 2394 6222977 12445954 18668931 37337862 43560839 56006793 87121678 112013586 118236563 130682517 236473126 261365034 354709689 392047551 709419378 784095102 827655941 1064129067 1655311882 2128258134 2482967823 4965935646 7448903469 14897806938