32421864 has 16 divisors (see below), whose sum is σ = 81054720. Its totient is φ = 10807280.

The previous prime is 32421863. The next prime is 32421901. The reversal of 32421864 is 46812423.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (32421863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675432 + ... + 675479.

It is an arithmetic number, because the mean of its divisors is an integer number (5065920).

Almost surely, 2^32421864 is an apocalyptic number.

It is an amenable number.

32421864 is an abundant number, since it is smaller than the sum of its proper divisors (48632856).

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

32421864 is a wasteful number, since it uses less digits than its factorization.

32421864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350920 (or 1350916 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 32421864 is about 5694.0200210396. The cubic root of 32421864 is about 318.8692644051.

The spelling of 32421864 in words is "thirty-two million, four hundred twenty-one thousand, eight hundred sixty-four".