831725780 has 48 divisors (see below), whose sum is σ = 1796862144. Its totient is φ = 323205120.

The previous prime is 831725777. The next prime is 831725813. The reversal of 831725780 is 87527138.

It is a super-3 number, since 3×831725780³ (a number of 28 digits) contains 333 as substring.

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, 163475 + ... + 168485.

It is an arithmetic number, because the mean of its divisors is an integer number (37434628).

Almost surely, 2^831725780 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 831725780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898431072).

831725780 is an abundant number, since it is smaller than the sum of its proper divisors (965136364).

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

831725780 is a wasteful number, since it uses less digits than its factorization.

831725780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5256 (or 5254 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 831725780 is about 28839.6563779807. The cubic root of 831725780 is about 940.4305331253.

The spelling of 831725780 in words is "eight hundred thirty-one million, seven hundred twenty-five thousand, seven hundred eighty".