18875424 has 48 divisors (see below), whose sum is σ = 50083488. Its totient is φ = 6223872.

The previous prime is 18875419. The next prime is 18875443. The reversal of 18875424 is 42457881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8299 + ... + 10325.

It is an arithmetic number, because the mean of its divisors is an integer number (1043406).

Almost surely, 2^18875424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18875424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25041744).

18875424 is an abundant number, since it is smaller than the sum of its proper divisors (31208064).

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

18875424 is a wasteful number, since it uses less digits than its factorization.

18875424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137 (or 2129 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 18875424 is about 4344.5855958883. The cubic root of 18875424 is about 266.2556947359.

The spelling of 18875424 in words is "eighteen million, eight hundred seventy-five thousand, four hundred twenty-four".