18224374 has 24 divisors (see below), whose sum is σ = 33673320. Its totient is φ = 7350336.

The previous prime is 18224359. The next prime is 18224417. The reversal of 18224374 is 47342281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3804 + ... + 7135.

It is an arithmetic number, because the mean of its divisors is an integer number (1403055).

Almost surely, 2^18224374 is an apocalyptic number.

18224374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18224374 is a deficient number, since it is larger than the sum of its proper divisors (15448946).

18224374 is a wasteful number, since it uses less digits than its factorization.

18224374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10972 (or 10965 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 18224374 is about 4269.0015226046. The cubic root of 18224374 is about 263.1585833428.

The spelling of 18224374 in words is "eighteen million, two hundred twenty-four thousand, three hundred seventy-four".