785055128 has 64 divisors (see below), whose sum is σ = 1769644800. Its totient is φ = 321713280.

The previous prime is 785055079. The next prime is 785055137. The reversal of 785055128 is 821550587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41213 + ... + 57171.

It is an arithmetic number, because the mean of its divisors is an integer number (27650700).

Almost surely, 2^785055128 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 785055128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884822400).

785055128 is an abundant number, since it is smaller than the sum of its proper divisors (984589672).

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

785055128 is a wasteful number, since it uses less digits than its factorization.

785055128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032 (or 16028 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 41.

The square root of 785055128 is about 28018.8352363192. The cubic root of 785055128 is about 922.5007294790.

The spelling of 785055128 in words is "seven hundred eighty-five million, fifty-five thousand, one hundred twenty-eight".