78776850 has 96 divisors (see below), whose sum is σ = 208200960. Its totient is φ = 19656000.

The previous prime is 78776849. The next prime is 78776857. The reversal of 78776850 is 5867787.

It is a self number, because there is not a number n which added to its sum of digits gives 78776850.

It is not an unprimeable number, because it can be changed into a prime (78776857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 373245 + ... + 373455.

It is an arithmetic number, because the mean of its divisors is an integer number (2168760).

Almost surely, 2^78776850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78776850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104100480).

78776850 is an abundant number, since it is smaller than the sum of its proper divisors (129424110).

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

78776850 is a wasteful number, since it uses less digits than its factorization.

78776850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 48.

The square root of 78776850 is about 8875.6323718369. The cubic root of 78776850 is about 428.6796528273.

The spelling of 78776850 in words is "seventy-eight million, seven hundred seventy-six thousand, eight hundred fifty".