18067680 has 72 divisors (see below), whose sum is σ = 61660872. Its totient is φ = 4817664.

The previous prime is 18067669. The next prime is 18067681. The reversal of 18067680 is 8676081.

It is a tau number, because it is divible by the number of its divisors (72).

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 (18067681) 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, 4834 + ... + 7713.

It is an arithmetic number, because the mean of its divisors is an integer number (856401).

Almost surely, 2^18067680 is an apocalyptic number.

18067680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18067680 is an abundant number, since it is smaller than the sum of its proper divisors (43593192).

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

18067680 is a wasteful number, since it uses less digits than its factorization.

18067680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12568 (or 12557 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 18067680 is about 4250.6093680789. The cubic root of 18067680 is about 262.4021948557.

The spelling of 18067680 in words is "eighteen million, sixty-seven thousand, six hundred eighty".