18454680 has 48 divisors (see below), whose sum is σ = 59978880. Its totient is φ = 4921152.

The previous prime is 18454679. The next prime is 18454687. The reversal of 18454680 is 8645481.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18454687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25272 + ... + 25991.

It is an arithmetic number, because the mean of its divisors is an integer number (1249560).

Almost surely, 2^18454680 is an apocalyptic number.

18454680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18454680 is an abundant number, since it is smaller than the sum of its proper divisors (41524200).

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

18454680 is a wasteful number, since it uses less digits than its factorization.

18454680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51280 (or 51273 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 18454680 is about 4295.8910600712. The cubic root of 18454680 is about 264.2624799916.

The spelling of 18454680 in words is "eighteen million, four hundred fifty-four thousand, six hundred eighty".