78009932 has 48 divisors (see below), whose sum is σ = 183305472. Its totient is φ = 28054080.

The previous prime is 78009931. The next prime is 78009937. The reversal of 78009932 is 23990087.

It is not an unprimeable number, because it can be changed into a prime (78009931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5738 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (3818864).

Almost surely, 2^78009932 is an apocalyptic number.

It is an amenable number.

78009932 is an abundant number, since it is smaller than the sum of its proper divisors (105295540).

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

78009932 is a wasteful number, since it uses less digits than its factorization.

78009932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19518 (or 19516 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 78009932 is about 8832.3231372046. The cubic root of 78009932 is about 427.2840024625.

The spelling of 78009932 in words is "seventy-eight million, nine thousand, nine hundred thirty-two".