32421668 has 12 divisors (see below), whose sum is σ = 57323532. Its totient is φ = 16043520.

The previous prime is 32421667. The next prime is 32421671. The reversal of 32421668 is 86612423.

It can be written as a sum of positive squares in 2 ways, for example, as 9935104 + 22486564 = 3152^2 + 4742^2 .

It is not an unprimeable number, because it can be changed into a prime (32421661) 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, 41393 + ... + 42168.

It is an arithmetic number, because the mean of its divisors is an integer number (4776961).

Almost surely, 2^32421668 is an apocalyptic number.

It is an amenable number.

32421668 is a deficient number, since it is larger than the sum of its proper divisors (24901864).

32421668 is a wasteful number, since it uses less digits than its factorization.

32421668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83662 (or 83660 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 32421668 is about 5694.0028099747. The cubic root of 32421668 is about 318.8686218500.

Subtracting from 32421668 its sum of digits (32), we obtain a square (32421636 = 5694²).

The spelling of 32421668 in words is "thirty-two million, four hundred twenty-one thousand, six hundred sixty-eight".