78930432 has 120 divisors (see below), whose sum is σ = 260447616. Its totient is φ = 22542336.

The previous prime is 78930421. The next prime is 78930461. The reversal of 78930432 is 23403987.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31033 + ... + 33479.

Almost surely, 2^78930432 is an apocalyptic number.

78930432 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78930432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130223808).

78930432 is an abundant number, since it is smaller than the sum of its proper divisors (181517184).

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

78930432 is a wasteful number, since it uses less digits than its factorization.

78930432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2478 (or 2459 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 78930432 is about 8884.2800496157. The cubic root of 78930432 is about 428.9580541576.

The spelling of 78930432 in words is "seventy-eight million, nine hundred thirty thousand, four hundred thirty-two".