18364080 has 160 divisors (see below), whose sum is σ = 68995584. Its totient is φ = 3944448.

The previous prime is 18364067. The next prime is 18364091. The reversal of 18364080 is 8046381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28239 + ... + 28881.

Almost surely, 2^18364080 is an apocalyptic number.

18364080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18364080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34497792).

18364080 is an abundant number, since it is smaller than the sum of its proper divisors (50631504).

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

18364080 is a wasteful number, since it uses less digits than its factorization.

18364080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18364080 is about 4285.3331259075. Note that the first 3 decimals coincide. The cubic root of 18364080 is about 263.8293203474.

The spelling of 18364080 in words is "eighteen million, three hundred sixty-four thousand, eighty".