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22480809 = 313576431
BaseRepresentation
bin101010111000…
…0011110101001
31120022010212120
41111300132221
521223341214
62121501453
7362040501
oct125603651
946263776
1022480809
111176518a
127641889
134871670
142db2a01
151e90ea9
hex15707a9

22480809 has 8 divisors (see below), whose sum is σ = 32280192. Its totient is φ = 13834320.

The previous prime is 22480769. The next prime is 22480811. The reversal of 22480809 is 90808422.

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

It is not a de Polignac number, because 22480809 - 211 = 22478761 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22480809.

It is not an unprimeable number, because it can be changed into a prime (22480849) 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, 288177 + ... + 288254.

It is an arithmetic number, because the mean of its divisors is an integer number (4035024).

Almost surely, 222480809 is an apocalyptic number.

It is an amenable number.

22480809 is a deficient number, since it is larger than the sum of its proper divisors (9799383).

22480809 is a wasteful number, since it uses less digits than its factorization.

22480809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576447.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 22480809 is about 4741.3931496977. The cubic root of 22480809 is about 282.2305217338.

The spelling of 22480809 in words is "twenty-two million, four hundred eighty thousand, eight hundred nine".

Divisors: 1 3 13 39 576431 1729293 7493603 22480809