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12872078456 = 233613445339
BaseRepresentation
bin10111111110011110…
…00101010001111000
31020020002002100002112
423333033011101320
5202330223002311
65525141151452
7633660601346
oct137717052170
936202070075
1012872078456
115505a53076
1225b29bb588
1312a1a33293
148a178a996
155050d428b
hex2ff3c5478

12872078456 has 16 divisors (see below), whose sum is σ = 24141881400. Its totient is φ = 6434243424.

The previous prime is 12872078441. The next prime is 12872078473. The reversal of 12872078456 is 65487027821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193766 + ... + 251573.

Almost surely, 212872078456 is an apocalyptic number.

It is an amenable number.

12872078456 is a deficient number, since it is larger than the sum of its proper divisors (11269802944).

12872078456 is a wasteful number, since it uses less digits than its factorization.

12872078456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448958 (or 448954 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 12872078456 in words is "twelve billion, eight hundred seventy-two million, seventy-eight thousand, four hundred fifty-six".

Divisors: 1 2 4 8 3613 7226 14452 28904 445339 890678 1781356 3562712 1609009807 3218019614 6436039228 12872078456