28933458 has 16 divisors (see below), whose sum is σ = 57964896. Its totient is φ = 9628160.

The previous prime is 28933433. The next prime is 28933469. The reversal of 28933458 is 85433982.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (3622806).

Almost surely, 2^28933458 is an apocalyptic number.

28933458 is an abundant number, since it is smaller than the sum of its proper divisors (29031438).

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

28933458 is a wasteful number, since it uses less digits than its factorization.

28933458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8169.

The product of its digits is 207360, while the sum is 42.

The square root of 28933458 is about 5378.9829893763. The cubic root of 28933458 is about 306.9965162807.

The spelling of 28933458 in words is "twenty-eight million, nine hundred thirty-three thousand, four hundred fifty-eight".