18788460 has 48 divisors (see below), whose sum is σ = 52797696. Its totient is φ = 4992192.

The previous prime is 18788431. The next prime is 18788467. The reversal of 18788460 is 6488781.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18788467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28899 + ... + 29541.

It is an arithmetic number, because the mean of its divisors is an integer number (1099952).

Almost surely, 2^18788460 is an apocalyptic number.

18788460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18788460 is an abundant number, since it is smaller than the sum of its proper divisors (34009236).

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

18788460 is a wasteful number, since it uses less digits than its factorization.

18788460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 18788460 is about 4334.5657221918. The cubic root of 18788460 is about 265.8461620125.

The spelling of 18788460 in words is "eighteen million, seven hundred eighty-eight thousand, four hundred sixty".