18746480 has 20 divisors (see below), whose sum is σ = 43585752. Its totient is φ = 7498560.

The previous prime is 18746447. The next prime is 18746489. The reversal of 18746480 is 8464781.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18746489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117086 + ... + 117245.

Almost surely, 2^18746480 is an apocalyptic number.

18746480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18746480 is an abundant number, since it is smaller than the sum of its proper divisors (24839272).

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

18746480 is a wasteful number, since it uses less digits than its factorization.

18746480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234344 (or 234338 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 18746480 is about 4329.7205452546. The cubic root of 18746480 is about 265.6480165523.

The spelling of 18746480 in words is "eighteen million, seven hundred forty-six thousand, four hundred eighty".