78884864 has 26 divisors (see below), whose sum is σ = 157758660. Its totient is φ = 39440384.

The previous prime is 78884857. The next prime is 78884867. The reversal of 78884864 is 46848887.

It is not an unprimeable number, because it can be changed into a prime (78884867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5534 + ... + 13725.

Almost surely, 2^78884864 is an apocalyptic number.

It is an amenable number.

78884864 is a deficient number, since it is larger than the sum of its proper divisors (78873796).

78884864 is an equidigital number, since it uses as much as digits as its factorization.

78884864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19283 (or 19261 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 53.

The square root of 78884864 is about 8881.7151496769. The cubic root of 78884864 is about 428.8754897909.

The spelling of 78884864 in words is "seventy-eight million, eight hundred eighty-four thousand, eight hundred sixty-four".