18748992 has 28 divisors (see below), whose sum is σ = 49607216. Its totient is φ = 6249600.

The previous prime is 18748967. The next prime is 18749009. The reversal of 18748992 is 29984781.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 48634 + ... + 49017.

Almost surely, 2^18748992 is an apocalyptic number.

18748992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18748992 is an abundant number, since it is smaller than the sum of its proper divisors (30858224).

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

18748992 is an equidigital number, since it uses as much as digits as its factorization.

18748992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97666 (or 97656 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 18748992 is about 4330.0106235435. The cubic root of 18748992 is about 265.6598814999.

The spelling of 18748992 in words is "eighteen million, seven hundred forty-eight thousand, nine hundred ninety-two".