18130032 has 60 divisors (see below), whose sum is σ = 51164880. Its totient is φ = 5992704.

The previous prime is 18130031. The next prime is 18130033. The reversal of 18130032 is 23003181.

It is an interprime number because it is at equal distance from previous prime (18130031) and next prime (18130033).

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 = 18129987 and 18130014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130031) 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, 19269 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (852748).

Almost surely, 2^18130032 is an apocalyptic number.

18130032 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 18130032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25582440).

18130032 is an abundant number, since it is smaller than the sum of its proper divisors (33034848).

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

18130032 is a wasteful number, since it uses less digits than its factorization.

18130032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070 (or 1061 counting only the distinct ones).

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

The square root of 18130032 is about 4257.9375288982. The cubic root of 18130032 is about 262.7037003907.

The spelling of 18130032 in words is "eighteen million, one hundred thirty thousand, thirty-two".