18202480 has 20 divisors (see below), whose sum is σ = 42320952. Its totient is φ = 7280960.

The previous prime is 18202463. The next prime is 18202511. The reversal of 18202480 is 8420281.

It is a tau number, because it is divible by the number of its divisors (20).

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, 113686 + ... + 113845.

Almost surely, 2^18202480 is an apocalyptic number.

18202480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18202480 is an abundant number, since it is smaller than the sum of its proper divisors (24118472).

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

18202480 is a wasteful number, since it uses less digits than its factorization.

18202480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227544 (or 227538 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 18202480 is about 4266.4364521225. The cubic root of 18202480 is about 263.0531585453.

The spelling of 18202480 in words is "eighteen million, two hundred two thousand, four hundred eighty".