32666432 has 28 divisors (see below), whose sum is σ = 65349120. Its totient is φ = 16200576.

The previous prime is 32666423. The next prime is 32666437. The reversal of 32666432 is 23466623.

32666432 is an admirable number.

It is a super-2 number, since 2×32666432² = 2134191559221248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32666437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6119 + ... + 10137.

Almost surely, 2^32666432 is an apocalyptic number.

32666432 is a gapful number since it is divisible by the number (32) 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 32666432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32674560).

32666432 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

32666432 is a wasteful number, since it uses less digits than its factorization.

32666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158 (or 4148 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 32666432 is about 5715.4555374003. The cubic root of 32666432 is about 319.6690328078.

The spelling of 32666432 in words is "thirty-two million, six hundred sixty-six thousand, four hundred thirty-two".