18879924 has 48 divisors (see below), whose sum is σ = 51527168. Its totient is φ = 5267808.

The previous prime is 18879919. The next prime is 18880007. The reversal of 18879924 is 42997881.

It is a super-3 number, since 3×18879924³ (a number of 23 digits) contains 333 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, 999 + ... + 6225.

Almost surely, 2^18879924 is an apocalyptic number.

18879924 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 18879924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25763584).

18879924 is an abundant number, since it is smaller than the sum of its proper divisors (32647244).

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

18879924 is a wasteful number, since it uses less digits than its factorization.

18879924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5282 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 18879924 is about 4345.1034510124. The cubic root of 18879924 is about 266.2768519723.

It can be divided in two parts, 1887 and 9924, that added together give a palindrome (11811).

The spelling of 18879924 in words is "eighteen million, eight hundred seventy-nine thousand, nine hundred twenty-four".