18875724 has 24 divisors (see below), whose sum is σ = 50335488. Its totient is φ = 5393040.

The previous prime is 18875713. The next prime is 18875741. The reversal of 18875724 is 42757881.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112272 + ... + 112439.

It is an arithmetic number, because the mean of its divisors is an integer number (2097312).

Almost surely, 2^18875724 is an apocalyptic number.

18875724 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18875724 is an abundant number, since it is smaller than the sum of its proper divisors (31459764).

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

18875724 is a wasteful number, since it uses less digits than its factorization.

18875724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224725 (or 224723 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 18875724 is about 4344.6201214836. The cubic root of 18875724 is about 266.2571053230.

The spelling of 18875724 in words is "eighteen million, eight hundred seventy-five thousand, seven hundred twenty-four".