785872878 has 144 divisors (see below), whose sum is σ = 1985066496. Its totient is φ = 206569440.

The previous prime is 785872877. The next prime is 785872883. The reversal of 785872878 is 878278587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785872873) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4821225 + ... + 4821387.

It is an arithmetic number, because the mean of its divisors is an integer number (13785184).

Almost surely, 2^785872878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 785872878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992533248).

785872878 is an abundant number, since it is smaller than the sum of its proper divisors (1199193618).

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

785872878 is a wasteful number, since it uses less digits than its factorization.

785872878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 229 counting only the distinct ones).

The product of its digits is 14049280, while the sum is 60.

The square root of 785872878 is about 28033.4243002884. The cubic root of 785872878 is about 922.8209249088.

The spelling of 785872878 in words is "seven hundred eighty-five million, eight hundred seventy-two thousand, eight hundred seventy-eight".