18472380 has 24 divisors (see below), whose sum is σ = 51722832. Its totient is φ = 4925952.

The previous prime is 18472367. The next prime is 18472393. The reversal of 18472380 is 8327481.

It is an interprime number because it is at equal distance from previous prime (18472367) and next prime (18472393).

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, 153877 + ... + 153996.

It is an arithmetic number, because the mean of its divisors is an integer number (2155118).

Almost surely, 2^18472380 is an apocalyptic number.

18472380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18472380 is an abundant number, since it is smaller than the sum of its proper divisors (33250452).

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

18472380 is a wasteful number, since it uses less digits than its factorization.

18472380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307885 (or 307883 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 18472380 is about 4297.9506744494. The cubic root of 18472380 is about 264.3469382664.

The spelling of 18472380 in words is "eighteen million, four hundred seventy-two thousand, three hundred eighty".