78991096 has 32 divisors (see below), whose sum is σ = 151642080. Its totient is φ = 38563200.

The previous prime is 78991093. The next prime is 78991097. The reversal of 78991096 is 69019987.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78991093) 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, 76101 + ... + 77131.

It is an arithmetic number, because the mean of its divisors is an integer number (4738815).

Almost surely, 2^78991096 is an apocalyptic number.

It is an amenable number.

78991096 is a deficient number, since it is larger than the sum of its proper divisors (72650984).

78991096 is a wasteful number, since it uses less digits than its factorization.

78991096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255 (or 1251 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 78991096 is about 8887.6935140676. The cubic root of 78991096 is about 429.0679215724.

The spelling of 78991096 in words is "seventy-eight million, nine hundred ninety-one thousand, ninety-six".