32878305440 has 24 divisors (see below), whose sum is σ = 77674996980. Its totient is φ = 13151322112.

The previous prime is 32878305419. The next prime is 32878305457. The reversal of 32878305440 is 4450387823.

It can be written as a sum of positive squares in 2 ways, for example, as 26910433936 + 5967871504 = 164044^2 + 77252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32878305391 and 32878305400.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102744545 + ... + 102744864.

Almost surely, 2^32878305440 is an apocalyptic number.

It is an amenable number.

32878305440 is an abundant number, since it is smaller than the sum of its proper divisors (44796691540).

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

32878305440 is a wasteful number, since it uses less digits than its factorization.

32878305440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205489424 (or 205489416 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 32878305440 in words is "thirty-two billion, eight hundred seventy-eight million, three hundred five thousand, four hundred forty".