78990112 has 24 divisors (see below), whose sum is σ = 155714076. Its totient is φ = 39443712.

The previous prime is 78990103. The next prime is 78990133. The reversal of 78990112 is 21109987.

It can be written as a sum of positive squares in 2 ways, for example, as 76667536 + 2322576 = 8756^2 + 1524^2 .

It is an unprimeable number.

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, 39898 + ... + 41830.

Almost surely, 2^78990112 is an apocalyptic number.

It is an amenable number.

78990112 is a deficient number, since it is larger than the sum of its proper divisors (76723964).

78990112 is a wasteful number, since it uses less digits than its factorization.

78990112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220 (or 3212 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 78990112 is about 8887.6381564508. The cubic root of 78990112 is about 429.0661399176.

The spelling of 78990112 in words is "seventy-eight million, nine hundred ninety thousand, one hundred twelve".