28533396 has 24 divisors (see below), whose sum is σ = 66838464. Its totient is φ = 9473920.

The previous prime is 28533389. The next prime is 28533433. The reversal of 28533396 is 69333582.

It is a congruent number.

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, 1365 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (2784936).

Almost surely, 2^28533396 is an apocalyptic number.

It is an amenable number.

28533396 is an abundant number, since it is smaller than the sum of its proper divisors (38305068).

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

28533396 is a wasteful number, since it uses less digits than its factorization.

28533396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9311 (or 9309 counting only the distinct ones).

The product of its digits is 116640, while the sum is 39.

The square root of 28533396 is about 5341.6660322413. Note that the first 3 decimals coincide. The cubic root of 28533396 is about 305.5750005819.

The spelling of 28533396 in words is "twenty-eight million, five hundred thirty-three thousand, three hundred ninety-six".