78012912 has 40 divisors (see below), whose sum is σ = 202280704. Its totient is φ = 25907904.

The previous prime is 78012911. The next prime is 78012919. The reversal of 78012912 is 21921087.

It is a self number, because there is not a number n which added to its sum of digits gives 78012912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78012911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10713 + ... + 16455.

Almost surely, 2^78012912 is an apocalyptic number.

It is an amenable number.

78012912 is an abundant number, since it is smaller than the sum of its proper divisors (124267792).

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

78012912 is a wasteful number, since it uses less digits than its factorization.

78012912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037 (or 6031 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 78012912 is about 8832.4918341315. The cubic root of 78012912 is about 427.2894431805.

Adding to 78012912 its reverse (21921087), we get a palindrome (99933999).

The spelling of 78012912 in words is "seventy-eight million, twelve thousand, nine hundred twelve".