32399980 has 24 divisors (see below), whose sum is σ = 68271840. Its totient is φ = 12915840.

The previous prime is 32399953. The next prime is 32399981. The reversal of 32399980 is 8999323.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32399981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3616 + ... + 8824.

It is an arithmetic number, because the mean of its divisors is an integer number (2844660).

Almost surely, 2^32399980 is an apocalyptic number.

It is an amenable number.

32399980 is an abundant number, since it is smaller than the sum of its proper divisors (35871860).

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

32399980 is a wasteful number, since it uses less digits than its factorization.

32399980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 32399980 is about 5692.0980314819. The cubic root of 32399980 is about 318.7975051586.

The spelling of 32399980 in words is "thirty-two million, three hundred ninety-nine thousand, nine hundred eighty".