28735896 has 32 divisors (see below), whose sum is σ = 82103040. Its totient is φ = 8210208.

The previous prime is 28735877. The next prime is 28735907. The reversal of 28735896 is 69853782.

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, 85356 + ... + 85691.

It is an arithmetic number, because the mean of its divisors is an integer number (2565720).

Almost surely, 2^28735896 is an apocalyptic number.

It is an amenable number.

28735896 is an abundant number, since it is smaller than the sum of its proper divisors (53367144).

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

28735896 is a wasteful number, since it uses less digits than its factorization.

28735896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171063 (or 171059 counting only the distinct ones).

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

The square root of 28735896 is about 5360.5872812594. The cubic root of 28735896 is about 306.2961804023.

The spelling of 28735896 in words is "twenty-eight million, seven hundred thirty-five thousand, eight hundred ninety-six".