18073680 has 40 divisors (see below), whose sum is σ = 56029152. Its totient is φ = 4819584.

The previous prime is 18073637. The next prime is 18073687. The reversal of 18073680 is 8637081.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18073687) 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, 37414 + ... + 37893.

Almost surely, 2^18073680 is an apocalyptic number.

18073680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18073680 is an abundant number, since it is smaller than the sum of its proper divisors (37955472).

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

18073680 is a wasteful number, since it uses less digits than its factorization.

18073680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75323 (or 75317 counting only the distinct ones).

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

The square root of 18073680 is about 4251.3150906514. The cubic root of 18073680 is about 262.4312382253.

The spelling of 18073680 in words is "eighteen million, seventy-three thousand, six hundred eighty".