78368560 has 40 divisors (see below), whose sum is σ = 184939056. Its totient is φ = 30877440.

The previous prime is 78368539. The next prime is 78368561. The reversal of 78368560 is 6586387.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×78368560² = 12283262392947200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78368561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 12670.

Almost surely, 2^78368560 is an apocalyptic number.

It is an amenable number.

78368560 is an abundant number, since it is smaller than the sum of its proper divisors (106570496).

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

78368560 is a wasteful number, since it uses less digits than its factorization.

78368560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14701 (or 14695 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 78368560 is about 8852.6018774143. The cubic root of 78368560 is about 427.9377730012.

The spelling of 78368560 in words is "seventy-eight million, three hundred sixty-eight thousand, five hundred sixty".