18730680 has 32 divisors (see below), whose sum is σ = 56192400. Its totient is φ = 4994816.

The previous prime is 18730643. The next prime is 18730687. The reversal of 18730680 is 8603781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18730687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77925 + ... + 78164.

Almost surely, 2^18730680 is an apocalyptic number.

18730680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18730680 is an abundant number, since it is smaller than the sum of its proper divisors (37461720).

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

18730680 is a wasteful number, since it uses less digits than its factorization.

18730680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156103 (or 156099 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 18730680 is about 4327.8955625107. The cubic root of 18730680 is about 265.5733639883.

The spelling of 18730680 in words is "eighteen million, seven hundred thirty thousand, six hundred eighty".