78928374 has 32 divisors (see below), whose sum is σ = 180804096. Its totient is φ = 22501440.

The previous prime is 78928373. The next prime is 78928391. The reversal of 78928374 is 47382987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78928373) 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, 20079 + ... + 23685.

It is an arithmetic number, because the mean of its divisors is an integer number (5650128).

Almost surely, 2^78928374 is an apocalyptic number.

78928374 is an abundant number, since it is smaller than the sum of its proper divisors (101875722).

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

78928374 is a wasteful number, since it uses less digits than its factorization.

78928374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140.

The product of its digits is 677376, while the sum is 48.

The square root of 78928374 is about 8884.1642263074. The cubic root of 78928374 is about 428.9543259659.

The spelling of 78928374 in words is "seventy-eight million, nine hundred twenty-eight thousand, three hundred seventy-four".