78157068 has 24 divisors (see below), whose sum is σ = 198945600. Its totient is φ = 23683920.

The previous prime is 78157049. The next prime is 78157073. The reversal of 78157068 is 86075187.

It is a super-2 number, since 2×78157068² = 12217054556713248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295918 + ... + 296181.

It is an arithmetic number, because the mean of its divisors is an integer number (8289400).

Almost surely, 2^78157068 is an apocalyptic number.

It is an amenable number.

78157068 is an abundant number, since it is smaller than the sum of its proper divisors (120788532).

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

78157068 is a wasteful number, since it uses less digits than its factorization.

78157068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592117 (or 592115 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 78157068 is about 8840.6486187383. The cubic root of 78157068 is about 427.5524698773.

The spelling of 78157068 in words is "seventy-eight million, one hundred fifty-seven thousand, sixty-eight".