78191360 has 144 divisors (see below), whose sum is σ = 208782336. Its totient is φ = 27869184.

The previous prime is 78191357. The next prime is 78191371. The reversal of 78191360 is 6319187.

It is a super-2 number, since 2×78191360² = 12227777557299200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78191360.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615617 + ... + 615743.

Almost surely, 2^78191360 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 78191360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104391168).

78191360 is an abundant number, since it is smaller than the sum of its proper divisors (130590976).

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

78191360 is a wasteful number, since it uses less digits than its factorization.

78191360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 78191360 is about 8842.5878565045. The cubic root of 78191360 is about 427.6149913523.

The spelling of 78191360 in words is "seventy-eight million, one hundred ninety-one thousand, three hundred sixty".