18457152 has 112 divisors (see below), whose sum is σ = 57741312. Its totient is φ = 5091840.

The previous prime is 18457139. The next prime is 18457157. The reversal of 18457152 is 25175481.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×18457152² = 681332919902208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18457157) 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, 41443 + ... + 41885.

Almost surely, 2^18457152 is an apocalyptic number.

18457152 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 18457152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28870656).

18457152 is an abundant number, since it is smaller than the sum of its proper divisors (39284160).

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

18457152 is a wasteful number, since it uses less digits than its factorization.

18457152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 486 counting only the distinct ones).

The product of its digits is 11200, while the sum is 33.

The square root of 18457152 is about 4296.1787672302. The cubic root of 18457152 is about 264.2742787636.

The spelling of 18457152 in words is "eighteen million, four hundred fifty-seven thousand, one hundred fifty-two".