78179328 has 132 divisors (see below), whose sum is σ = 239499000. Its totient is φ = 24477696.

The previous prime is 78179317. The next prime is 78179329. The reversal of 78179328 is 82397187.

It is a super-2 number, since 2×78179328² = 12224014653063168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78179329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156423 + ... + 156921.

Almost surely, 2^78179328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78179328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119749500).

78179328 is an abundant number, since it is smaller than the sum of its proper divisors (161319672).

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

78179328 is a wasteful number, since it uses less digits than its factorization.

78179328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 521 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 78179328 is about 8841.9074865099. The cubic root of 78179328 is about 427.5930565865.

The spelling of 78179328 in words is "seventy-eight million, one hundred seventy-nine thousand, three hundred twenty-eight".