18032976 has 160 divisors (see below), whose sum is σ = 59024000. Its totient is φ = 5256576.

The previous prime is 18032969. The next prime is 18033011. The reversal of 18032976 is 67923081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18032976.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949095 + ... + 949113.

It is an arithmetic number, because the mean of its divisors is an integer number (368900).

Almost surely, 2^18032976 is an apocalyptic number.

18032976 is a gapful number since it is divisible by the number (16) 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 18032976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29512000).

18032976 is an abundant number, since it is smaller than the sum of its proper divisors (40991024).

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

18032976 is a wasteful number, since it uses less digits than its factorization.

18032976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 18032976 is about 4246.5251677107. The cubic root of 18032976 is about 262.2340817303.

The spelling of 18032976 in words is "eighteen million, thirty-two thousand, nine hundred seventy-six".