18052280 has 32 divisors (see below), whose sum is σ = 42757200. Its totient is φ = 6840576.

The previous prime is 18052273. The next prime is 18052313. The reversal of 18052280 is 8225081.

It is a congruent number.

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, 11117 + ... + 12636.

Almost surely, 2^18052280 is an apocalyptic number.

18052280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18052280 is an abundant number, since it is smaller than the sum of its proper divisors (24704920).

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

18052280 is a wasteful number, since it uses less digits than its factorization.

18052280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23783 (or 23779 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18052280 is about 4248.7974769339. The cubic root of 18052280 is about 262.3276207643.

The spelling of 18052280 in words is "eighteen million, fifty-two thousand, two hundred eighty".