78670752 has 24 divisors (see below), whose sum is σ = 206510976. Its totient is φ = 26223552.

The previous prime is 78670751. The next prime is 78670771. The reversal of 78670752 is 25707687.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78670751) 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 3 ways as a sum of consecutive naturals, for example, 409648 + ... + 409839.

It is an arithmetic number, because the mean of its divisors is an integer number (8604624).

Almost surely, 2^78670752 is an apocalyptic number.

It is an amenable number.

78670752 is an abundant number, since it is smaller than the sum of its proper divisors (127840224).

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

78670752 is a wasteful number, since it uses less digits than its factorization.

78670752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819500 (or 819492 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 78670752 is about 8869.6534317864. The cubic root of 78670752 is about 428.4871153506.

The spelling of 78670752 in words is "seventy-eight million, six hundred seventy thousand, seven hundred fifty-two".