78936136 has 32 divisors (see below), whose sum is σ = 150120000. Its totient is φ = 38909376.

The previous prime is 78936131. The next prime is 78936149. The reversal of 78936136 is 63163987.

It is a super-2 number, since 2×78936136² = 12461827133220992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78936092 and 78936101.

It is not an unprimeable number, because it can be changed into a prime (78936131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284830 + ... + 285106.

It is an arithmetic number, because the mean of its divisors is an integer number (4691250).

Almost surely, 2^78936136 is an apocalyptic number.

It is an amenable number.

78936136 is a deficient number, since it is larger than the sum of its proper divisors (71183864).

78936136 is a wasteful number, since it uses less digits than its factorization.

78936136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661 (or 657 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 78936136 is about 8884.6010602615. The cubic root of 78936136 is about 428.9683869606.

The spelling of 78936136 in words is "seventy-eight million, nine hundred thirty-six thousand, one hundred thirty-six".