77572976 has 40 divisors (see below), whose sum is σ = 163010400. Its totient is φ = 35548416.

The previous prime is 77572933. The next prime is 77572987. The reversal of 77572976 is 67927577.

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, 29741 + ... + 32243.

It is an arithmetic number, because the mean of its divisors is an integer number (4075260).

Almost surely, 2^77572976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77572976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81505200).

77572976 is an abundant number, since it is smaller than the sum of its proper divisors (85437424).

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

77572976 is a wasteful number, since it uses less digits than its factorization.

77572976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673 (or 2667 counting only the distinct ones).

The product of its digits is 1296540, while the sum is 50.

The square root of 77572976 is about 8807.5522138674. The cubic root of 77572976 is about 426.4847282017.

The spelling of 77572976 in words is "seventy-seven million, five hundred seventy-two thousand, nine hundred seventy-six".