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831056044 = 2271315112
BaseRepresentation
bin110001100010001…
…110100010101100
32010220210000120111
4301202032202230
53200222243134
6214244225404
726410600630
oct6142164254
92126700514
10831056044
11397122785
121b239b264
13103237750
147c530dc0
154ce5dc64
hex3188e8ac

831056044 has 36 divisors (see below), whose sum is σ = 1791152272. Its totient is φ = 328551840.

The previous prime is 831056041. The next prime is 831056071. The reversal of 831056044 is 440650138.

It is a happy number.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 831055997 and 831056015.

It is not an unprimeable number, because it can be changed into a prime (831056041) 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 11 ways as a sum of consecutive naturals, for example, 549249 + ... + 550759.

Almost surely, 2831056044 is an apocalyptic number.

It is an amenable number.

831056044 is an abundant number, since it is smaller than the sum of its proper divisors (960096228).

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

831056044 is a wasteful number, since it uses less digits than its factorization.

831056044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 831056044 is about 28828.0426668201. The cubic root of 831056044 is about 940.1780423280.

The spelling of 831056044 in words is "eight hundred thirty-one million, fifty-six thousand, forty-four".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 1511 3022 6044 10577 19643 21154 39286 42308 78572 137501 275002 550004 2283121 4566242 9132484 15981847 29680573 31963694 59361146 63927388 118722292 207764011 415528022 831056044