18626872 has 32 divisors (see below), whose sum is σ = 39761280. Its totient is φ = 8097760.

The previous prime is 18626837. The next prime is 18626879. The reversal of 18626872 is 27862681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18626879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2578 + ... + 6625.

It is an arithmetic number, because the mean of its divisors is an integer number (1242540).

Almost surely, 2^18626872 is an apocalyptic number.

It is an amenable number.

18626872 is an abundant number, since it is smaller than the sum of its proper divisors (21134408).

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

18626872 is a wasteful number, since it uses less digits than its factorization.

18626872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9243 (or 9239 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 18626872 is about 4315.8860040553. The cubic root of 18626872 is about 265.0818401552.

The spelling of 18626872 in words is "eighteen million, six hundred twenty-six thousand, eight hundred seventy-two".