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23130988 = 2256910163
BaseRepresentation
bin101100000111…
…1001101101100
31121112011202021
41120033031230
521410142423
62143435524
7400416166
oct130171554
947464667
1023130988
1112069721
1278b5ba4
134a3b59a
143101936
15206d95d
hex160f36c

23130988 has 12 divisors (see below), whose sum is σ = 40554360. Its totient is φ = 11544032.

The previous prime is 23130983. The next prime is 23130997. The reversal of 23130988 is 88903132.

It is a super-2 number, since 2×231309882 = 1070085211712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23130983) 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 3 ways as a sum of consecutive naturals, for example, 2806 + ... + 7357.

It is an arithmetic number, because the mean of its divisors is an integer number (3379530).

Almost surely, 223130988 is an apocalyptic number.

It is an amenable number.

23130988 is a deficient number, since it is larger than the sum of its proper divisors (17423372).

23130988 is a wasteful number, since it uses less digits than its factorization.

23130988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10736 (or 10734 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 23130988 is about 4809.4685777121. The cubic root of 23130988 is about 284.9255494460.

The spelling of 23130988 in words is "twenty-three million, one hundred thirty thousand, nine hundred eighty-eight".

Divisors: 1 2 4 569 1138 2276 10163 20326 40652 5782747 11565494 23130988