18722352 has 80 divisors (see below), whose sum is σ = 53746560. Its totient is φ = 5568000.

The previous prime is 18722323. The next prime is 18722359. The reversal of 18722352 is 25322781.

It is not an unprimeable number, because it can be changed into a prime (18722359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30852 + ... + 31452.

It is an arithmetic number, because the mean of its divisors is an integer number (671832).

Almost surely, 2^18722352 is an apocalyptic number.

18722352 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 18722352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26873280).

18722352 is an abundant number, since it is smaller than the sum of its proper divisors (35024208).

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

18722352 is a wasteful number, since it uses less digits than its factorization.

18722352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 676 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 18722352 is about 4326.9333251161. The cubic root of 18722352 is about 265.5339985756.

It can be divided in two parts, 1872 and 2352, that added together give a palindrome (4224).

The spelling of 18722352 in words is "eighteen million, seven hundred twenty-two thousand, three hundred fifty-two".