78929536 has 64 divisors (see below), whose sum is σ = 181298880. Its totient is φ = 33527808.

The previous prime is 78929533. The next prime is 78929573. The reversal of 78929536 is 63592987.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 78929536.

It is not an unprimeable number, because it can be changed into a prime (78929531) 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, 122431 + ... + 123073.

It is an arithmetic number, because the mean of its divisors is an integer number (2832795).

Almost surely, 2^78929536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78929536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90649440).

78929536 is an abundant number, since it is smaller than the sum of its proper divisors (102369344).

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

78929536 is a wasteful number, since it uses less digits than its factorization.

78929536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 789 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 78929536 is about 8884.2296233269. The cubic root of 78929536 is about 428.9564310073.

The spelling of 78929536 in words is "seventy-eight million, nine hundred twenty-nine thousand, five hundred thirty-six".