18115152 has 60 divisors (see below), whose sum is σ = 51455040. Its totient is φ = 5487680.

The previous prime is 18115147. The next prime is 18115157. The reversal of 18115152 is 25151181.

It is an interprime number because it is at equal distance from previous prime (18115147) and next prime (18115157).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18115157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4249 + ... + 7367.

It is an arithmetic number, because the mean of its divisors is an integer number (857584).

Almost surely, 2^18115152 is an apocalyptic number.

18115152 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 18115152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25727520).

18115152 is an abundant number, since it is smaller than the sum of its proper divisors (33339888).

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

18115152 is a wasteful number, since it uses less digits than its factorization.

18115152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152 (or 3135 counting only the distinct ones).

The product of its digits is 400, while the sum is 24.

The square root of 18115152 is about 4256.1898453899. The cubic root of 18115152 is about 262.6318104463.

The spelling of 18115152 in words is "eighteen million, one hundred fifteen thousand, one hundred fifty-two".