78591200 has 72 divisors (see below), whose sum is σ = 198112320. Its totient is φ = 30412800.

The previous prime is 78591193. The next prime is 78591211. The reversal of 78591200 is 219587.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 23216 + ... + 26384.

It is an arithmetic number, because the mean of its divisors is an integer number (2751560).

Almost surely, 2^78591200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78591200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99056160).

78591200 is an abundant number, since it is smaller than the sum of its proper divisors (119521120).

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

78591200 is a wasteful number, since it uses less digits than its factorization.

78591200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220 (or 3207 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 78591200 is about 8865.1677931103. The cubic root of 78591200 is about 428.3426376711.

The spelling of 78591200 in words is "seventy-eight million, five hundred ninety-one thousand, two hundred".