78115896 has 24 divisors (see below), whose sum is σ = 211564080. Its totient is φ = 26038608.

The previous prime is 78115871. The next prime is 78115909. The reversal of 78115896 is 69851187.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×78115896² = 12204186415765632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 542400 + ... + 542543.

It is an arithmetic number, because the mean of its divisors is an integer number (8815170).

Almost surely, 2^78115896 is an apocalyptic number.

It is an amenable number.

78115896 is an abundant number, since it is smaller than the sum of its proper divisors (133448184).

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

78115896 is a wasteful number, since it uses less digits than its factorization.

78115896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084955 (or 1084948 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 78115896 is about 8838.3197498167. The cubic root of 78115896 is about 427.4773805617.

The spelling of 78115896 in words is "seventy-eight million, one hundred fifteen thousand, eight hundred ninety-six".