76981872 has 40 divisors (see below), whose sum is σ = 216950400. Its totient is φ = 23327680.

The previous prime is 76981841. The next prime is 76981909. The reversal of 76981872 is 27818967.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72372 + ... + 73427.

It is an arithmetic number, because the mean of its divisors is an integer number (5423760).

Almost surely, 2^76981872 is an apocalyptic number.

It is an amenable number.

76981872 is an abundant number, since it is smaller than the sum of its proper divisors (139968528).

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

76981872 is a wasteful number, since it uses less digits than its factorization.

76981872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145821 (or 145815 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 76981872 is about 8773.9313879241. The cubic root of 76981872 is about 425.3986976017.

The spelling of 76981872 in words is "seventy-six million, nine hundred eighty-one thousand, eight hundred seventy-two".