77933982 has 32 divisors (see below), whose sum is σ = 185882112. Its totient is φ = 21298464.

The previous prime is 77933981. The next prime is 77933987. The reversal of 77933982 is 28933977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77933981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39373 + ... + 41304.

It is an arithmetic number, because the mean of its divisors is an integer number (5808816).

Almost surely, 2^77933982 is an apocalyptic number.

77933982 is an abundant number, since it is smaller than the sum of its proper divisors (107948130).

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

77933982 is a wasteful number, since it uses less digits than its factorization.

77933982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80712.

The product of its digits is 571536, while the sum is 48.

The square root of 77933982 is about 8828.0225418833. The cubic root of 77933982 is about 427.1452903925.

The spelling of 77933982 in words is "seventy-seven million, nine hundred thirty-three thousand, nine hundred eighty-two".