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22106286831 = 373859117511
BaseRepresentation
bin10100100101101000…
…110010101011101111
32010001121212201121010
4110211220302223233
5330233202134311
614053330240303
71411546223556
oct244550625357
963047781533
1022106286831
119414471542
12434b426093
132113b871c5
1410d9d2ad9d
15895b25da6
hex525a32aef

22106286831 has 16 divisors (see below), whose sum is σ = 29913854720. Its totient is φ = 14518595520.

The previous prime is 22106286823. The next prime is 22106286857. The reversal of 22106286831 is 13868260122.

It is not a de Polignac number, because 22106286831 - 23 = 22106286823 is a prime.

It is a super-2 number, since 2×221062868312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22106286831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22106286331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129366 + ... + 246876.

It is an arithmetic number, because the mean of its divisors is an integer number (1869615920).

Almost surely, 222106286831 is an apocalyptic number.

22106286831 is a deficient number, since it is larger than the sum of its proper divisors (7807567889).

22106286831 is a wasteful number, since it uses less digits than its factorization.

22106286831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118446.

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 22106286831 in words is "twenty-two billion, one hundred six million, two hundred eighty-six thousand, eight hundred thirty-one".

Divisors: 1 3 73 219 859 2577 62707 117511 188121 352533 8578303 25734909 100941949 302825847 7368762277 22106286831