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12289038 = 232389051
BaseRepresentation
bin101110111000…
…010000001110
3212010100101120
4232320100032
511121222123
61115221410
7206312046
oct56702016
925110346
1012289038
116a33a33
124147866
132713728
1418bc726
15112b2e3
hexbb840e

12289038 has 16 divisors (see below), whose sum is σ = 25646976. Its totient is φ = 3918200.

The previous prime is 12289021. The next prime is 12289111. The reversal of 12289038 is 83098221.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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, 44388 + ... + 44663.

It is an arithmetic number, because the mean of its divisors is an integer number (1602936).

Almost surely, 212289038 is an apocalyptic number.

12289038 is an abundant number, since it is smaller than the sum of its proper divisors (13357938).

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

12289038 is a wasteful number, since it uses less digits than its factorization.

12289038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89079.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 12289038 is about 3505.5724211603. The cubic root of 12289038 is about 230.7664287010.

The spelling of 12289038 in words is "twelve million, two hundred eighty-nine thousand, thirty-eight".

Divisors: 1 2 3 6 23 46 69 138 89051 178102 267153 534306 2048173 4096346 6144519 12289038