28762864 has 20 divisors (see below), whose sum is σ = 60015256. Its totient is φ = 13275072.

The previous prime is 28762837. The next prime is 28762889. The reversal of 28762864 is 46826782.

It is a self number, because there is not a number n which added to its sum of digits gives 28762864.

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, 68934 + ... + 69349.

Almost surely, 2^28762864 is an apocalyptic number.

It is an amenable number.

28762864 is an abundant number, since it is smaller than the sum of its proper divisors (31252392).

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

28762864 is a wasteful number, since it uses less digits than its factorization.

28762864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138304 (or 138298 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 28762864 is about 5363.1020874117. The cubic root of 28762864 is about 306.3919678307.

The spelling of 28762864 in words is "twenty-eight million, seven hundred sixty-two thousand, eight hundred sixty-four".