18527980 has 12 divisors (see below), whose sum is σ = 38908800. Its totient is φ = 7411184.

The previous prime is 18527963. The next prime is 18528031. The reversal of 18527980 is 8972581.

It is a congruent number.

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, 463180 + ... + 463219.

It is an arithmetic number, because the mean of its divisors is an integer number (3242400).

Almost surely, 2^18527980 is an apocalyptic number.

18527980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18527980 is an abundant number, since it is smaller than the sum of its proper divisors (20380820).

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

18527980 is a wasteful number, since it uses less digits than its factorization.

18527980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926408 (or 926406 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 18527980 is about 4304.4140135447. The cubic root of 18527980 is about 264.6118918203.

The spelling of 18527980 in words is "eighteen million, five hundred twenty-seven thousand, nine hundred eighty".