18007392 has 96 divisors (see below), whose sum is σ = 52157952. Its totient is φ = 5405184.

The previous prime is 18007361. The next prime is 18007447. The reversal of 18007392 is 29370081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58503 + ... + 58809.

It is an arithmetic number, because the mean of its divisors is an integer number (543312).

Almost surely, 2^18007392 is an apocalyptic number.

18007392 is a gapful number since it is divisible by the number (12) 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 18007392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26078976).

18007392 is an abundant number, since it is smaller than the sum of its proper divisors (34150560).

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

18007392 is a wasteful number, since it uses less digits than its factorization.

18007392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 18007392 is about 4243.5117532534. The cubic root of 18007392 is about 262.1100095489.

The spelling of 18007392 in words is "eighteen million, seven thousand, three hundred ninety-two".