77028492 has 24 divisors (see below), whose sum is σ = 180423936. Its totient is φ = 25577488.

The previous prime is 77028467. The next prime is 77028499. The reversal of 77028492 is 29482077.

It is a self number, because there is not a number n which added to its sum of digits gives 77028492.

It is not an unprimeable number, because it can be changed into a prime (77028499) 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 7 ways as a sum of consecutive naturals, for example, 9048 + ... + 15359.

It is an arithmetic number, because the mean of its divisors is an integer number (7517664).

Almost surely, 2^77028492 is an apocalyptic number.

It is an amenable number.

77028492 is an abundant number, since it is smaller than the sum of its proper divisors (103395444).

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

77028492 is a wasteful number, since it uses less digits than its factorization.

77028492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24677 (or 24675 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 77028492 is about 8776.5877196095. The cubic root of 77028492 is about 425.4845536814.

The spelling of 77028492 in words is "seventy-seven million, twenty-eight thousand, four hundred ninety-two".