18530472 has 32 divisors (see below), whose sum is σ = 48765600. Its totient is φ = 5851584.

The previous prime is 18530461. The next prime is 18530537. The reversal of 18530472 is 27403581.

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, 19863 + ... + 20774.

It is an arithmetic number, because the mean of its divisors is an integer number (1523925).

Almost surely, 2^18530472 is an apocalyptic number.

18530472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18530472 is an abundant number, since it is smaller than the sum of its proper divisors (30235128).

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

18530472 is a wasteful number, since it uses less digits than its factorization.

18530472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40665 (or 40661 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 18530472 is about 4304.7034741083. The cubic root of 18530472 is about 264.6237546582.

The spelling of 18530472 in words is "eighteen million, five hundred thirty thousand, four hundred seventy-two".