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78767980232 = 2367214812
BaseRepresentation
bin100100101011011101…
…1111111111011001000
321112022110211222121012
41021112323333323020
52242304100331412
6100104023103052
75455641533144
oct1112673777310
9245273758535
1078767980232
1130450520427
12133232a1a88
137573b0c236
143b532b2224
1520b025ac22
hex1256effec8

78767980232 has 36 divisors (see below), whose sum is σ = 150028493265. Its totient is φ = 38769973440.

The previous prime is 78767980219. The next prime is 78767980237. The reversal of 78767980232 is 23208976787.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 78358565476 + 409414756 = 279926^2 + 20234^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=198454.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78767980237) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 53184932 + ... + 53186412.

Almost surely, 278767980232 is an apocalyptic number.

It is an amenable number.

78767980232 is a deficient number, since it is larger than the sum of its proper divisors (71260513033).

78767980232 is an frugal number, since it uses more digits than its factorization.

78767980232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 59.

The spelling of 78767980232 in words is "seventy-eight billion, seven hundred sixty-seven million, nine hundred eighty thousand, two hundred thirty-two".

Divisors: 1 2 4 8 67 134 268 536 1481 2962 4489 5924 8978 11848 17956 35912 99227 198454 396908 793816 2193361 4386722 6648209 8773444 13296418 17546888 26592836 53185672 146955187 293910374 587820748 1175641496 9845997529 19691995058 39383990116 78767980232