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22663049 = 891491709
BaseRepresentation
bin101011001110…
…0111110001001
31120122101212012
41112130332021
521300204144
62125425305
7363430013
oct126347611
946571765
1022663049
111187a0a2
12770b235
1349065b6
14301d1b3
151ec9e9e
hex159cf89

22663049 has 8 divisors (see below), whose sum is σ = 23085000. Its totient is φ = 22244992.

The previous prime is 22663033. The next prime is 22663051. The reversal of 22663049 is 94036622.

It can be written as a sum of positive squares in 4 ways, for example, as 573049 + 22090000 = 757^2 + 4700^2 .

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 22663049 - 24 = 22663033 is a prime.

It is a super-2 number, since 2×226630492 = 1027227579952802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22663009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12407 + ... + 14115.

It is an arithmetic number, because the mean of its divisors is an integer number (2885625).

Almost surely, 222663049 is an apocalyptic number.

It is an amenable number.

22663049 is a deficient number, since it is larger than the sum of its proper divisors (421951).

22663049 is a wasteful number, since it uses less digits than its factorization.

22663049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 22663049 is about 4760.5723395407. The cubic root of 22663049 is about 282.9911012864.

The spelling of 22663049 in words is "twenty-two million, six hundred sixty-three thousand, forty-nine".

Divisors: 1 89 149 1709 13261 152101 254641 22663049