28226574 has 12 divisors (see below), whose sum is σ = 61157616. Its totient is φ = 9408852.

The previous prime is 28226563. The next prime is 28226587. The reversal of 28226574 is 47562282.

28226574 is a `hidden beast` number, since 2 + 82 + 2 + 6 + 574 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 784054 + ... + 784089.

It is an arithmetic number, because the mean of its divisors is an integer number (5096468).

Almost surely, 2^28226574 is an apocalyptic number.

28226574 is an abundant number, since it is smaller than the sum of its proper divisors (32931042).

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

28226574 is a wasteful number, since it uses less digits than its factorization.

28226574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568151 (or 1568148 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28226574 is about 5312.8687166163. The cubic root of 28226574 is about 304.4757598376.

The spelling of 28226574 in words is "twenty-eight million, two hundred twenty-six thousand, five hundred seventy-four".