18873572 has 12 divisors (see below), whose sum is σ = 33106416. Its totient is φ = 9414600.

The previous prime is 18873557. The next prime is 18873611. The reversal of 18873572 is 27537881.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3554 + ... + 7097.

It is an arithmetic number, because the mean of its divisors is an integer number (2758868).

Almost surely, 2^18873572 is an apocalyptic number.

It is an amenable number.

18873572 is a deficient number, since it is larger than the sum of its proper divisors (14232844).

18873572 is a wasteful number, since it uses less digits than its factorization.

18873572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11098 (or 11096 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 18873572 is about 4344.3724518047. The cubic root of 18873572 is about 266.2469863810.

The spelling of 18873572 in words is "eighteen million, eight hundred seventy-three thousand, five hundred seventy-two".