18958224 has 20 divisors (see below), whose sum is σ = 48975536. Its totient is φ = 6319392.

The previous prime is 18958217. The next prime is 18958231. The reversal of 18958224 is 42285981.

It is an interprime number because it is at equal distance from previous prime (18958217) and next prime (18958231).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 197434 + ... + 197529.

Almost surely, 2^18958224 is an apocalyptic number.

It is an amenable number.

18958224 is an abundant number, since it is smaller than the sum of its proper divisors (30017312).

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

18958224 is a wasteful number, since it uses less digits than its factorization.

18958224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394974 (or 394968 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 18958224 is about 4354.1042706853. The cubic root of 18958224 is about 266.6444509271.

The spelling of 18958224 in words is "eighteen million, nine hundred fifty-eight thousand, two hundred twenty-four".