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22102829 = 73157547
BaseRepresentation
bin101010001010…
…0001100101101
31112120221101022
41110110030231
521124242304
62105423525
7355604510
oct124241455
945527338
1022102829
1111527201
12749aba5
13476b5c8
142d14d77
151e18ebe
hex151432d

22102829 has 4 divisors (see below), whose sum is σ = 25260384. Its totient is φ = 18945276.

The previous prime is 22102799. The next prime is 22102837. The reversal of 22102829 is 92820122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92820122 = 246410061.

It is not a de Polignac number, because 22102829 - 28 = 22102573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22102798 and 22102807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1578767 + ... + 1578780.

It is an arithmetic number, because the mean of its divisors is an integer number (6315096).

Almost surely, 222102829 is an apocalyptic number.

It is an amenable number.

22102829 is a deficient number, since it is larger than the sum of its proper divisors (3157555).

22102829 is an equidigital number, since it uses as much as digits as its factorization.

22102829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157554.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22102829 is about 4701.3645891379. The cubic root of 22102829 is about 280.6398166293.

The spelling of 22102829 in words is "twenty-two million, one hundred two thousand, eight hundred twenty-nine".

Divisors: 1 7 3157547 22102829