18512032 has 72 divisors (see below), whose sum is σ = 45849888. Its totient is φ = 7201920.

The previous prime is 18512029. The next prime is 18512047. The reversal of 18512032 is 23021581.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 18511994 and 18512012.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26763 + ... + 27445.

It is an arithmetic number, because the mean of its divisors is an integer number (636804).

Almost surely, 2^18512032 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 18512032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22924944).

18512032 is an abundant number, since it is smaller than the sum of its proper divisors (27337856).

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

18512032 is a wasteful number, since it uses less digits than its factorization.

18512032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18512032 is about 4302.5610977649. The cubic root of 18512032 is about 264.5359482684.

It can be divided in two parts, 1851 and 2032, that added together give a palindrome (3883).

The spelling of 18512032 in words is "eighteen million, five hundred twelve thousand, thirty-two".