28715450 has 12 divisors (see below), whose sum is σ = 53410830. Its totient is φ = 11486160.

The previous prime is 28715437. The next prime is 28715471. The reversal of 28715450 is 5451782.

It can be written as a sum of positive squares in 3 ways, for example, as 21687649 + 7027801 = 4657^2 + 2651^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287105 + ... + 287204.

Almost surely, 2^28715450 is an apocalyptic number.

28715450 is a deficient number, since it is larger than the sum of its proper divisors (24695380).

28715450 is a wasteful number, since it uses less digits than its factorization.

28715450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574321 (or 574316 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 28715450 is about 5358.6798747453. The cubic root of 28715450 is about 306.2235184654.

The spelling of 28715450 in words is "twenty-eight million, seven hundred fifteen thousand, four hundred fifty".