28942912 has 14 divisors (see below), whose sum is σ = 57433718. Its totient is φ = 14471424.

The previous prime is 28942883. The next prime is 28942931. The reversal of 28942912 is 21924982.

It can be written as a sum of positive squares in only one way, i.e., 21013056 + 7929856 = 4584^2 + 2816^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226053 + ... + 226180.

Almost surely, 2^28942912 is an apocalyptic number.

It is an amenable number.

28942912 is a deficient number, since it is larger than the sum of its proper divisors (28490806).

28942912 is an equidigital number, since it uses as much as digits as its factorization.

28942912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452245 (or 452235 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 28942912 is about 5379.8617082598. The cubic root of 28942912 is about 307.0299496506.

The spelling of 28942912 in words is "twenty-eight million, nine hundred forty-two thousand, nine hundred twelve".