28202816 has 14 divisors (see below), whose sum is σ = 55965090. Its totient is φ = 14101376.

The previous prime is 28202809. The next prime is 28202827. The reversal of 28202816 is 61820282.

It can be written as a sum of positive squares in only one way, i.e., 22052416 + 6150400 = 4696^2 + 2480^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220271 + ... + 220398.

Almost surely, 2^28202816 is an apocalyptic number.

It is an amenable number.

28202816 is a deficient number, since it is larger than the sum of its proper divisors (27762274).

28202816 is an equidigital number, since it uses as much as digits as its factorization.

28202816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440681 (or 440671 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28202816 is about 5310.6323540610. The cubic root of 28202816 is about 304.3903112155.

The spelling of 28202816 in words is "twenty-eight million, two hundred two thousand, eight hundred sixteen".