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22000639 is a prime number
BaseRepresentation
bin101001111101…
…1001111111111
31112101202012111
41103323033333
521113010024
62103314451
7355000543
oct123731777
945352174
1022000639
1111467451
12744ba27
134733c3b
142cc9a23
151de8a94
hex14fb3ff

22000639 has 2 divisors, whose sum is σ = 22000640. Its totient is φ = 22000638.

The previous prime is 22000633. The next prime is 22000661. The reversal of 22000639 is 93600022.

It is an a-pointer prime, because the next prime (22000661) can be obtained adding 22000639 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22000639 - 29 = 22000127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000633) 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 as a sum of consecutive naturals, namely, 11000319 + 11000320.

It is an arithmetic number, because the mean of its divisors is an integer number (11000320).

Almost surely, 222000639 is an apocalyptic number.

22000639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000639 is an equidigital number, since it uses as much as digits as its factorization.

22000639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 22000639 is about 4690.4838769577. The cubic root of 22000639 is about 280.2066459228.

The spelling of 22000639 in words is "twenty-two million, six hundred thirty-nine", and thus it is an aban number.