78013296 has 30 divisors (see below), whose sum is σ = 218329280. Its totient is φ = 26004384.

The previous prime is 78013291. The next prime is 78013303. The reversal of 78013296 is 69231087.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 78013296.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78013291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270736 + ... + 271023.

Almost surely, 2^78013296 is an apocalyptic number.

It is an amenable number.

78013296 is an abundant number, since it is smaller than the sum of its proper divisors (140315984).

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

78013296 is a wasteful number, since it uses less digits than its factorization.

78013296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541773 (or 541764 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 78013296 is about 8832.5135720247. The cubic root of 78013296 is about 427.2901442562.

The spelling of 78013296 in words is "seventy-eight million, thirteen thousand, two hundred ninety-six".