78360136 has 16 divisors (see below), whose sum is σ = 147570300. Its totient is φ = 39008064.

The previous prime is 78360133. The next prime is 78360137. The reversal of 78360136 is 63106387.

It can be written as a sum of positive squares in 2 ways, for example, as 78322500 + 37636 = 8850^2 + 194^2 .

It is a super-2 number, since 2×78360136² = 12280621827876992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78360133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19555 + ... + 23218.

Almost surely, 2^78360136 is an apocalyptic number.

It is an amenable number.

78360136 is a deficient number, since it is larger than the sum of its proper divisors (69210164).

78360136 is a wasteful number, since it uses less digits than its factorization.

78360136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43008 (or 43004 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 78360136 is about 8852.1260723060. The cubic root of 78360136 is about 427.9224391437.

The spelling of 78360136 in words is "seventy-eight million, three hundred sixty thousand, one hundred thirty-six".