18080544 has 48 divisors (see below), whose sum is σ = 47688480. Its totient is φ = 5998080.

The previous prime is 18080521. The next prime is 18080551. The reversal of 18080544 is 44508081.

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, 31492 + ... + 32060.

It is an arithmetic number, because the mean of its divisors is an integer number (993510).

Almost surely, 2^18080544 is an apocalyptic number.

It is an amenable number.

18080544 is an abundant number, since it is smaller than the sum of its proper divisors (29607936).

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

18080544 is a wasteful number, since it uses less digits than its factorization.

18080544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 18080544 is about 4252.1222936317. The cubic root of 18080544 is about 262.4644559583.

The spelling of 18080544 in words is "eighteen million, eighty thousand, five hundred forty-four".