18993352 has 64 divisors (see below), whose sum is σ = 43856640. Its totient is φ = 7526400.

The previous prime is 18993343. The next prime is 18993367. The reversal of 18993352 is 25339981.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 67452 + ... + 67732.

It is an arithmetic number, because the mean of its divisors is an integer number (685260).

Almost surely, 2^18993352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18993352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21928320).

18993352 is an abundant number, since it is smaller than the sum of its proper divisors (24863288).

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

18993352 is a wasteful number, since it uses less digits than its factorization.

18993352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 378 counting only the distinct ones).

The product of its digits is 58320, while the sum is 40.

The square root of 18993352 is about 4358.1362989241. The cubic root of 18993352 is about 266.8090392519.

The spelling of 18993352 in words is "eighteen million, nine hundred ninety-three thousand, three hundred fifty-two".