28796538 has 24 divisors (see below), whose sum is σ = 61183872. Its totient is φ = 9033664.

The previous prime is 28796519. The next prime is 28796563. The reversal of 28796538 is 83569782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6570 + ... + 10037.

It is an arithmetic number, because the mean of its divisors is an integer number (2549328).

Almost surely, 2^28796538 is an apocalyptic number.

28796538 is an abundant number, since it is smaller than the sum of its proper divisors (32387334).

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

28796538 is a wasteful number, since it uses less digits than its factorization.

28796538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16646 (or 16629 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28796538 is about 5366.2405834998. The cubic root of 28796538 is about 306.5114902280.

The spelling of 28796538 in words is "twenty-eight million, seven hundred ninety-six thousand, five hundred thirty-eight".