78356964 has 48 divisors (see below), whose sum is σ = 215699456. Its totient is φ = 21664800.

The previous prime is 78356963. The next prime is 78356981. The reversal of 78356964 is 46965387.

It is a super-2 number, since 2×78356964² = 12279627614594592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78356963) 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 15 ways as a sum of consecutive naturals, for example, 12442 + ... + 17649.

Almost surely, 2^78356964 is an apocalyptic number.

It is an amenable number.

78356964 is an abundant number, since it is smaller than the sum of its proper divisors (137342492).

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

78356964 is a wasteful number, since it uses less digits than its factorization.

78356964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30136 (or 30134 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 78356964 is about 8851.9469044951. The cubic root of 78356964 is about 427.9166649990.

The spelling of 78356964 in words is "seventy-eight million, three hundred fifty-six thousand, nine hundred sixty-four".