32128868840 has 32 divisors (see below), whose sum is σ = 72360849960. Its totient is φ = 12838944000.

The previous prime is 32128868833. The next prime is 32128868861. The reversal of 32128868840 is 4886882123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29036841604 + 3092027236 = 170402^2 + 55606^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352511 + ... + 434190.

Almost surely, 2^32128868840 is an apocalyptic number.

It is an amenable number.

32128868840 is an abundant number, since it is smaller than the sum of its proper divisors (40231981120).

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

32128868840 is a wasteful number, since it uses less digits than its factorization.

32128868840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787733 (or 787729 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 50.

The spelling of 32128868840 in words is "thirty-two billion, one hundred twenty-eight million, eight hundred sixty-eight thousand, eight hundred forty".