18979230 has 32 divisors (see below), whose sum is σ = 45684000. Its totient is φ = 5046272.

The previous prime is 18979217. The next prime is 18979249. The reversal of 18979230 is 3297981.

It is a super-2 number, since 2×18979230² = 720422342785800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12766 + ... + 14174.

It is an arithmetic number, because the mean of its divisors is an integer number (1427625).

Almost surely, 2^18979230 is an apocalyptic number.

18979230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18979230 is an abundant number, since it is smaller than the sum of its proper divisors (26704770).

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

18979230 is a wasteful number, since it uses less digits than its factorization.

18979230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 18979230 is about 4356.5158096809. The cubic root of 18979230 is about 266.7428966094.

The spelling of 18979230 in words is "eighteen million, nine hundred seventy-nine thousand, two hundred thirty".