78722800 has 60 divisors (see below), whose sum is σ = 203693560. Its totient is φ = 29064960.

The previous prime is 78722773. The next prime is 78722821. The reversal of 78722800 is 822787.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2370 + ... + 12769.

Almost surely, 2^78722800 is an apocalyptic number.

It is an amenable number.

78722800 is an abundant number, since it is smaller than the sum of its proper divisors (124970760).

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

78722800 is a wasteful number, since it uses less digits than its factorization.

78722800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15170 (or 15159 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 78722800 is about 8872.5869959105. The cubic root of 78722800 is about 428.5815891771.

The spelling of 78722800 in words is "seventy-eight million, seven hundred twenty-two thousand, eight hundred".