28474224 has 20 divisors (see below), whose sum is σ = 73558536. Its totient is φ = 9491392.

The previous prime is 28474211. The next prime is 28474249. The reversal of 28474224 is 42247482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296559 + ... + 296654.

Almost surely, 2^28474224 is an apocalyptic number.

28474224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28474224 is an abundant number, since it is smaller than the sum of its proper divisors (45084312).

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

28474224 is a wasteful number, since it uses less digits than its factorization.

28474224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593224 (or 593218 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 28474224 is about 5336.1244363302. The cubic root of 28474224 is about 305.3636225723.

The spelling of 28474224 in words is "twenty-eight million, four hundred seventy-four thousand, two hundred twenty-four".