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22668954 = 23711139353
BaseRepresentation
bin101011001111…
…0011010011010
31120122200221220
41112132122122
521300401304
62125512510
7363453150
oct126363232
946580856
1022668954
1111883580
127712736
1349091a9
1430213d0
151ecbad9
hex159e69a

22668954 has 64 divisors (see below), whose sum is σ = 57093120. Its totient is φ = 5829120.

The previous prime is 22668953. The next prime is 22668959. The reversal of 22668954 is 45986622.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (22668953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64042 + ... + 64394.

It is an arithmetic number, because the mean of its divisors is an integer number (892080).

Almost surely, 222668954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22668954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28546560).

22668954 is an abundant number, since it is smaller than the sum of its proper divisors (34424166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22668954 is a wasteful number, since it uses less digits than its factorization.

22668954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515.

The product of its digits is 207360, while the sum is 42.

The square root of 22668954 is about 4761.1924976837. The cubic root of 22668954 is about 283.0156775226.

The spelling of 22668954 in words is "twenty-two million, six hundred sixty-eight thousand, nine hundred fifty-four".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 66 77 139 154 231 278 353 417 462 706 834 973 1059 1529 1946 2118 2471 2919 3058 3883 4587 4942 5838 7413 7766 9174 10703 11649 14826 21406 23298 27181 32109 49067 54362 64218 81543 98134 147201 163086 294402 343469 539737 686938 1030407 1079474 1619211 2060814 3238422 3778159 7556318 11334477 22668954