Search a number
82823431 = 127652153
BaseRepresentation
bin1001110111111…
…00100100000111
312202211212101111
410323330210013
5132200322211
612115105451
72023662505
oct473744407
9182755344
1082823431
114282a519
12238a2287
131420b562
157410421
hex4efc907

82823431 has 4 divisors (see below), whose sum is σ = 83475712. Its totient is φ = 82171152.

The previous prime is 82823423. The next prime is 82823453. The reversal of 82823431 is 13432828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82823431 - 23 = 82823423 is a prime.

It is a super-2 number, since 2×828234312 = 13719441445223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82823393 and 82823402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82823401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325950 + ... + 326203.

It is an arithmetic number, because the mean of its divisors is an integer number (20868928).

Almost surely, 282823431 is an apocalyptic number.

82823431 is a deficient number, since it is larger than the sum of its proper divisors (652281).

82823431 is a wasteful number, since it uses less digits than its factorization.

82823431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652280.

The product of its digits is 9216, while the sum is 31.

The square root of 82823431 is about 9100.7379371126. The cubic root of 82823431 is about 435.8975276813.

The spelling of 82823431 in words is "eighty-two million, eight hundred twenty-three thousand, four hundred thirty-one".

Divisors: 1 127 652153 82823431