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22628073 = 3131095323
BaseRepresentation
bin101011001010…
…0011011101001
31120120121212210
41112110123221
521243044243
62124555333
7363223026
oct126243351
946517783
1022628073
1111855896
1276b2b49
1348c36c0
14301054d
151ebe933
hex15946e9

22628073 has 16 divisors (see below), whose sum is σ = 32795840. Its totient is φ = 13794624.

The previous prime is 22628059. The next prime is 22628101. The reversal of 22628073 is 37082622.

It is not a de Polignac number, because 22628073 - 24 = 22628057 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22628073.

It is not an unprimeable number, because it can be changed into a prime (22628773) 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 15 ways as a sum of consecutive naturals, for example, 1590 + ... + 6912.

It is an arithmetic number, because the mean of its divisors is an integer number (2049740).

Almost surely, 222628073 is an apocalyptic number.

It is an amenable number.

22628073 is a deficient number, since it is larger than the sum of its proper divisors (10167767).

22628073 is a wasteful number, since it uses less digits than its factorization.

22628073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5448.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22628073 is about 4756.8974132306. The cubic root of 22628073 is about 282.8454457900.

The spelling of 22628073 in words is "twenty-two million, six hundred twenty-eight thousand, seventy-three".

Divisors: 1 3 13 39 109 327 1417 4251 5323 15969 69199 207597 580207 1740621 7542691 22628073