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22938949 = 118923431
BaseRepresentation
bin101011110000…
…0010101000101
31121011102022201
41113200111011
521333021244
62135354501
7365656255
oct127402505
947142281
1022938949
1111a48410
127822a31
1349a2057
143091965
152031ad4
hex15e0545

22938949 has 8 divisors (see below), whose sum is σ = 25306560. Its totient is φ = 20618400.

The previous prime is 22938943. The next prime is 22939013. The reversal of 22938949 is 94983922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22938949 - 25 = 22938917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22938899 and 22938908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22938943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10737 + ... + 12694.

It is an arithmetic number, because the mean of its divisors is an integer number (3163320).

Almost surely, 222938949 is an apocalyptic number.

It is an amenable number.

22938949 is a deficient number, since it is larger than the sum of its proper divisors (2367611).

22938949 is a wasteful number, since it uses less digits than its factorization.

22938949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23531.

The product of its digits is 279936, while the sum is 46.

The square root of 22938949 is about 4789.4622871466. The cubic root of 22938949 is about 284.1348504935.

The spelling of 22938949 in words is "twenty-two million, nine hundred thirty-eight thousand, nine hundred forty-nine".

Divisors: 1 11 89 979 23431 257741 2085359 22938949