18264380 has 24 divisors (see below), whose sum is σ = 38525760. Its totient is φ = 7273280.

The previous prime is 18264361. The next prime is 18264397. The reversal of 18264380 is 8346281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870 + ... + 6690.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^18264380 is an apocalyptic number.

18264380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18264380 is an abundant number, since it is smaller than the sum of its proper divisors (20261380).

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

18264380 is a wasteful number, since it uses less digits than its factorization.

18264380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4069 (or 4067 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 18264380 is about 4273.6845929479. The cubic root of 18264380 is about 263.3510038170.

The spelling of 18264380 in words is "eighteen million, two hundred sixty-four thousand, three hundred eighty".