77216232 has 16 divisors (see below), whose sum is σ = 193040640. Its totient is φ = 25738736.

The previous prime is 77216231. The next prime is 77216239. The reversal of 77216232 is 23261277.

It is a self number, because there is not a number n which added to its sum of digits gives 77216232.

It is not an unprimeable number, because it can be changed into a prime (77216231) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1608648 + ... + 1608695.

It is an arithmetic number, because the mean of its divisors is an integer number (12065040).

Almost surely, 2^77216232 is an apocalyptic number.

It is an amenable number.

77216232 is an abundant number, since it is smaller than the sum of its proper divisors (115824408).

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

77216232 is a wasteful number, since it uses less digits than its factorization.

77216232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217352 (or 3217348 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 77216232 is about 8787.2767112456. The cubic root of 77216232 is about 425.8299482176.

The spelling of 77216232 in words is "seventy-seven million, two hundred sixteen thousand, two hundred thirty-two".