78160136 has 8 divisors (see below), whose sum is σ = 146550270. Its totient is φ = 39080064.

The previous prime is 78160109. The next prime is 78160217. The reversal of 78160136 is 63106187.

It can be written as a sum of positive squares in only one way, i.e., 72352036 + 5808100 = 8506^2 + 2410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78160136² = 12218013719076992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4885001 + ... + 4885016.

Almost surely, 2^78160136 is an apocalyptic number.

It is an amenable number.

78160136 is a deficient number, since it is larger than the sum of its proper divisors (68390134).

78160136 is a wasteful number, since it uses less digits than its factorization.

78160136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9770023 (or 9770019 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 78160136 is about 8840.8221337158. The cubic root of 78160136 is about 427.5580642266.

The spelling of 78160136 in words is "seventy-eight million, one hundred sixty thousand, one hundred thirty-six".