18480244 has 6 divisors (see below), whose sum is σ = 32340434. Its totient is φ = 9240120.

The previous prime is 18480229. The next prime is 18480251. The reversal of 18480244 is 44208481.

It can be written as a sum of positive squares in only one way, i.e., 17539344 + 940900 = 4188^2 + 970^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2310027 + ... + 2310034.

Almost surely, 2^18480244 is an apocalyptic number.

It is an amenable number.

18480244 is a deficient number, since it is larger than the sum of its proper divisors (13860190).

18480244 is a wasteful number, since it uses less digits than its factorization.

18480244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4620065 (or 4620063 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 18480244 is about 4298.8654317157. The cubic root of 18480244 is about 264.3844452434.

The spelling of 18480244 in words is "eighteen million, four hundred eighty thousand, two hundred forty-four".