77342856 has 32 divisors (see below), whose sum is σ = 196084800. Its totient is φ = 25417280.

The previous prime is 77342849. The next prime is 77342879. The reversal of 77342856 is 65824377.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20991 + ... + 24398.

It is an arithmetic number, because the mean of its divisors is an integer number (6127650).

Almost surely, 2^77342856 is an apocalyptic number.

It is an amenable number.

77342856 is an abundant number, since it is smaller than the sum of its proper divisors (118741944).

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

77342856 is a wasteful number, since it uses less digits than its factorization.

77342856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45469 (or 45465 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 77342856 is about 8794.4787224713. The cubic root of 77342856 is about 426.0625886130.

The spelling of 77342856 in words is "seventy-seven million, three hundred forty-two thousand, eight hundred fifty-six".