77932768 has 24 divisors (see below), whose sum is σ = 156697632. Its totient is φ = 38136576.

The previous prime is 77932741. The next prime is 77932769. The reversal of 77932768 is 86723977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77932769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24405 + ... + 27412.

It is an arithmetic number, because the mean of its divisors is an integer number (6529068).

Almost surely, 2^77932768 is an apocalyptic number.

It is an amenable number.

77932768 is an abundant number, since it is smaller than the sum of its proper divisors (78764864).

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

77932768 is a wasteful number, since it uses less digits than its factorization.

77932768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51874 (or 51866 counting only the distinct ones).

The product of its digits is 889056, while the sum is 49.

The square root of 77932768 is about 8827.9537832954. The cubic root of 77932768 is about 427.1430724594.

The spelling of 77932768 in words is "seventy-seven million, nine hundred thirty-two thousand, seven hundred sixty-eight".