78817050 has 144 divisors (see below), whose sum is σ = 236964000. Its totient is φ = 19362240.

The previous prime is 78817043. The next prime is 78817051. The reversal of 78817050 is 5071887.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78816996 and 78817014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78817051) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 157701 + ... + 158199.

Almost surely, 2^78817050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78817050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118482000).

78817050 is an abundant number, since it is smaller than the sum of its proper divisors (158146950).

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

78817050 is a wasteful number, since it uses less digits than its factorization.

78817050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 78817050 is about 8877.8967103701. The cubic root of 78817050 is about 428.7525591508.

The spelling of 78817050 in words is "seventy-eight million, eight hundred seventeen thousand, fifty".