18742332 has 96 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 5018112.

The previous prime is 18742319. The next prime is 18742349. The reversal of 18742332 is 23324781.

It is a self number, because there is not a number n which added to its sum of digits gives 18742332.

It is a congruent number.

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, 171894 + ... + 172002.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^18742332 is an apocalyptic number.

18742332 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 18742332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26611200).

18742332 is an abundant number, since it is smaller than the sum of its proper divisors (34480068).

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

18742332 is a wasteful number, since it uses less digits than its factorization.

18742332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 233 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 18742332 is about 4329.2415040051. The cubic root of 18742332 is about 265.6284219536.

The spelling of 18742332 in words is "eighteen million, seven hundred forty-two thousand, three hundred thirty-two".