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22990964 = 223125981
BaseRepresentation
bin101011110110…
…1000001110100
31121021001200012
41113231001310
521341202324
62140435352
7366264023
oct127550164
947231605
1022990964
1111a834a7
127848b58
1349bc929
1430a68ba
15204220e
hex15ed074

22990964 has 18 divisors (see below), whose sum is σ = 41580882. Its totient is φ = 11122800.

The previous prime is 22990951. The next prime is 22990967. The reversal of 22990964 is 46909922.

It can be written as a sum of positive squares in only one way, i.e., 13380964 + 9610000 = 3658^2 + 3100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22990967) 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 5 ways as a sum of consecutive naturals, for example, 854 + ... + 6834.

It is an arithmetic number, because the mean of its divisors is an integer number (2310049).

Almost surely, 222990964 is an apocalyptic number.

It is an amenable number.

22990964 is a deficient number, since it is larger than the sum of its proper divisors (18589918).

22990964 is a wasteful number, since it uses less digits than its factorization.

22990964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6047 (or 6014 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 22990964 is about 4794.8893626444. The cubic root of 22990964 is about 284.3494508142.

The spelling of 22990964 in words is "twenty-two million, nine hundred ninety thousand, nine hundred sixty-four".

Divisors: 1 2 4 31 62 124 961 1922 3844 5981 11962 23924 185411 370822 741644 5747741 11495482 22990964