18943032 has 64 divisors (see below), whose sum is σ = 51904800. Its totient is φ = 5734400.

The previous prime is 18942997. The next prime is 18943037. The reversal of 18943032 is 23034981.

It is a super-2 number, since 2×18943032² = 717676922706048, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18943037) 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, 11032 + ... + 12632.

Almost surely, 2^18943032 is an apocalyptic number.

18943032 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 18943032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25952400).

18943032 is an abundant number, since it is smaller than the sum of its proper divisors (32961768).

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

18943032 is a wasteful number, since it uses less digits than its factorization.

18943032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 18943032 is about 4352.3593601632. The cubic root of 18943032 is about 266.5732075268.

The spelling of 18943032 in words is "eighteen million, nine hundred forty-three thousand, thirty-two".