18013032 has 48 divisors (see below), whose sum is σ = 49832640. Its totient is φ = 5875488.

The previous prime is 18013003. The next prime is 18013049. The reversal of 18013032 is 23031081.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 18012996 and 18013014.

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, 723 + ... + 6045.

It is an arithmetic number, because the mean of its divisors is an integer number (1038180).

Almost surely, 2^18013032 is an apocalyptic number.

18013032 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 18013032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24916320).

18013032 is an abundant number, since it is smaller than the sum of its proper divisors (31819608).

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

18013032 is a wasteful number, since it uses less digits than its factorization.

18013032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382 (or 5375 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 18013032 is about 4244.1762451623. The cubic root of 18013032 is about 262.1373713890.

The spelling of 18013032 in words is "eighteen million, thirteen thousand, thirty-two".