77028312 has 16 divisors (see below), whose sum is σ = 192570840. Its totient is φ = 25676096.

The previous prime is 77028221. The next prime is 77028353. The reversal of 77028312 is 21382077.

It is a self number, because there is not a number n which added to its sum of digits gives 77028312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604733 + ... + 1604780.

Almost surely, 2^77028312 is an apocalyptic number.

It is an amenable number.

77028312 is an abundant number, since it is smaller than the sum of its proper divisors (115542528).

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

77028312 is a wasteful number, since it uses less digits than its factorization.

77028312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209522 (or 3209518 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 77028312 is about 8776.5774650487. The cubic root of 77028312 is about 425.4842222573.

The spelling of 77028312 in words is "seventy-seven million, twenty-eight thousand, three hundred twelve".