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56819668430 = 257331534371
BaseRepresentation
bin110100111010101101…
…110101010111001110
312102122212020020000002
4310322231311113032
51412331313342210
642034054404302
74051021133000
oct647255652716
9172585206002
1056819668430
1122108248968
12b018960692
1354868b6ba5
142a70348370
15172843c4a5
hexd3ab755ce

56819668430 has 64 divisors (see below), whose sum is σ = 123119308800. Its totient is φ = 18852573600.

The previous prime is 56819668417. The next prime is 56819668453. The reversal of 56819668430 is 3486691865.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160856 + ... + 373515.

It is an arithmetic number, because the mean of its divisors is an integer number (1923739200).

Almost surely, 256819668430 is an apocalyptic number.

56819668430 is an abundant number, since it is smaller than the sum of its proper divisors (66299640370).

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

56819668430 is a wasteful number, since it uses less digits than its factorization.

56819668430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534430 (or 534416 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 56819668430 in words is "fifty-six billion, eight hundred nineteen million, six hundred sixty-eight thousand, four hundred thirty".

Divisors: 1 2 5 7 10 14 31 35 49 62 70 98 155 217 245 310 343 434 490 686 1085 1519 1715 2170 3038 3430 7595 10633 15190 21266 53165 106330 534371 1068742 2671855 3740597 5343710 7481194 16565501 18702985 26184179 33131002 37405970 52368358 82827505 115958507 130920895 165655010 183289253 231917014 261841790 366578506 579792535 811709549 916446265 1159585070 1623419098 1832892530 4058547745 5681966843 8117095490 11363933686 28409834215 56819668430