28726832 has 20 divisors (see below), whose sum is σ = 57454656. Its totient is φ = 13899840.

The previous prime is 28726829. The next prime is 28726847. The reversal of 28726832 is 23862782.

28726832 is an admirable 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, 28463 + ... + 29454.

Almost surely, 2^28726832 is an apocalyptic number.

It is an amenable number.

28726832 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28726832 is a wasteful number, since it uses less digits than its factorization.

28726832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57956 (or 57950 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 28726832 is about 5359.7417848251. The cubic root of 28726832 is about 306.2639725959.

The spelling of 28726832 in words is "twenty-eight million, seven hundred twenty-six thousand, eight hundred thirty-two".