18072152 has 32 divisors (see below), whose sum is σ = 39463200. Its totient is φ = 7597824.

The previous prime is 18072149. The next prime is 18072157. The reversal of 18072152 is 25127081.

It is a super-2 number, since 2×18072152² = 653205355822208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18072157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77 + ... + 6012.

It is an arithmetic number, because the mean of its divisors is an integer number (1233225).

Almost surely, 2^18072152 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 18072152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19731600).

18072152 is an abundant number, since it is smaller than the sum of its proper divisors (21391048).

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

18072152 is a wasteful number, since it uses less digits than its factorization.

18072152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18072152 is about 4251.1353777550. The cubic root of 18072152 is about 262.4238424573.

The spelling of 18072152 in words is "eighteen million, seventy-two thousand, one hundred fifty-two".