77285976 has 64 divisors (see below), whose sum is σ = 202321920. Its totient is φ = 24572160.

The previous prime is 77285941. The next prime is 77285981. The reversal of 77285976 is 67958277.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53601 + ... + 55023.

It is an arithmetic number, because the mean of its divisors is an integer number (3161280).

Almost surely, 2^77285976 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 77285976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101160960).

77285976 is an abundant number, since it is smaller than the sum of its proper divisors (125035944).

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

77285976 is a wasteful number, since it uses less digits than its factorization.

77285976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1536 (or 1532 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 51.

The square root of 77285976 is about 8791.2442805328. The cubic root of 77285976 is about 425.9581170664.

The spelling of 77285976 in words is "seventy-seven million, two hundred eighty-five thousand, nine hundred seventy-six".