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22913369 = 611492521
BaseRepresentation
bin101011101101…
…0000101011001
31121010010020022
41113122011121
521331211434
62135040225
7365521553
oct127320531
947103208
1022913369
1111a30176
127810075
13499350b
1430864d3
15202922e
hex15da159

22913369 has 8 divisors (see below), whose sum is σ = 23454600. Its totient is φ = 22377600.

The previous prime is 22913357. The next prime is 22913413. The reversal of 22913369 is 96331922.

It can be written as a sum of positive squares in 4 ways, for example, as 5382400 + 17530969 = 2320^2 + 4187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22913369 - 24 = 22913353 is a prime.

It is a super-2 number, since 2×229133692 = 1050044957860322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22913329) 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 7 ways as a sum of consecutive naturals, for example, 7829 + ... + 10349.

It is an arithmetic number, because the mean of its divisors is an integer number (2931825).

Almost surely, 222913369 is an apocalyptic number.

It is an amenable number.

22913369 is a deficient number, since it is larger than the sum of its proper divisors (541231).

22913369 is a wasteful number, since it uses less digits than its factorization.

22913369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731.

The product of its digits is 17496, while the sum is 35.

The square root of 22913369 is about 4786.7910963400. The cubic root of 22913369 is about 284.0291950744.

The spelling of 22913369 in words is "twenty-two million, nine hundred thirteen thousand, three hundred sixty-nine".

Divisors: 1 61 149 2521 9089 153781 375629 22913369