28516932 has 36 divisors (see below), whose sum is σ = 72468396. Its totient is φ = 9455040.

The previous prime is 28516919. The next prime is 28516949. The reversal of 28516932 is 23961582.

It can be written as a sum of positive squares in 2 ways, for example, as 15729156 + 12787776 = 3966^2 + 3576^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 5082 + ... + 9102.

It is an arithmetic number, because the mean of its divisors is an integer number (2013011).

Almost surely, 2^28516932 is an apocalyptic number.

It is an amenable number.

28516932 is an abundant number, since it is smaller than the sum of its proper divisors (43951464).

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

28516932 is a wasteful number, since it uses less digits than its factorization.

28516932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228 (or 4223 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28516932 is about 5340.1247176447. The cubic root of 28516932 is about 305.5162161928.

The spelling of 28516932 in words is "twenty-eight million, five hundred sixteen thousand, nine hundred thirty-two".