18802224 has 120 divisors (see below), whose sum is σ = 62829312. Its totient is φ = 5132160.

The previous prime is 18802207. The next prime is 18802279. The reversal of 18802224 is 42220881.

It is a hoax number, since the sum of its digits (27) 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 23 ways as a sum of consecutive naturals, for example, 22779 + ... + 23589.

Almost surely, 2^18802224 is an apocalyptic number.

18802224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18802224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31414656).

18802224 is an abundant number, since it is smaller than the sum of its proper divisors (44027088).

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

18802224 is a wasteful number, since it uses less digits than its factorization.

18802224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 18802224 is about 4336.1531338273. The cubic root of 18802224 is about 265.9110637911.

The spelling of 18802224 in words is "eighteen million, eight hundred two thousand, two hundred twenty-four".