78437912 has 32 divisors (see below), whose sum is σ = 175392000. Its totient is φ = 32154144.

The previous prime is 78437911. The next prime is 78437923. The reversal of 78437912 is 21973487.

It is a self number, because there is not a number n which added to its sum of digits gives 78437912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78437911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29162 + ... + 31737.

It is an arithmetic number, because the mean of its divisors is an integer number (5481000).

Almost surely, 2^78437912 is an apocalyptic number.

It is an amenable number.

78437912 is an abundant number, since it is smaller than the sum of its proper divisors (96954088).

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

78437912 is a wasteful number, since it uses less digits than its factorization.

78437912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60935 (or 60931 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 78437912 is about 8856.5180516950. The cubic root of 78437912 is about 428.0639698253.

The spelling of 78437912 in words is "seventy-eight million, four hundred thirty-seven thousand, nine hundred twelve".