77907952 has 40 divisors (see below), whose sum is σ = 155204352. Its totient is φ = 37867200.

The previous prime is 77907943. The next prime is 77907967. The reversal of 77907952 is 25970977.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158427 + ... + 158917.

Almost surely, 2^77907952 is an apocalyptic number.

It is an amenable number.

77907952 is a deficient number, since it is larger than the sum of its proper divisors (77296400).

77907952 is a wasteful number, since it uses less digits than its factorization.

77907952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 46.

The square root of 77907952 is about 8826.5481361629. The cubic root of 77907952 is about 427.0977294966.

The spelling of 77907952 in words is "seventy-seven million, nine hundred seven thousand, nine hundred fifty-two".