76865428 has 24 divisors (see below), whose sum is σ = 142921800. Its totient is φ = 36102528.

The previous prime is 76865407. The next prime is 76865441. The reversal of 76865428 is 82456867.

It can be written as a sum of positive squares in 4 ways, for example, as 24621444 + 52243984 = 4962^2 + 7228^2 .

It is a congruent number.

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, 4663 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (5955075).

Almost surely, 2^76865428 is an apocalyptic number.

It is an amenable number.

76865428 is a deficient number, since it is larger than the sum of its proper divisors (66056372).

76865428 is a wasteful number, since it uses less digits than its factorization.

76865428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17979 (or 17977 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 76865428 is about 8767.2930828164. The cubic root of 76865428 is about 425.1841010933.

The spelling of 76865428 in words is "seventy-six million, eight hundred sixty-five thousand, four hundred twenty-eight".