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23308908 = 22374809
BaseRepresentation
bin101100011101…
…0101001101100
31121212012210220
41120322221230
521431341113
62151331340
7402060000
oct130725154
947765726
1023308908
1112180367
127980b50
134aa156c
14314a700
1520a6523
hex163aa6c

23308908 has 60 divisors (see below), whose sum is σ = 63526680. Its totient is φ = 6651456.

The previous prime is 23308907. The next prime is 23308919. The reversal of 23308908 is 80980332.

It is not an unprimeable number, because it can be changed into a prime (23308903) 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 19 ways as a sum of consecutive naturals, for example, 28408 + ... + 29216.

It is an arithmetic number, because the mean of its divisors is an integer number (1058778).

Almost surely, 223308908 is an apocalyptic number.

23308908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23308908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31763340).

23308908 is an abundant number, since it is smaller than the sum of its proper divisors (40217772).

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

23308908 is an equidigital number, since it uses as much as digits as its factorization.

23308908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 23308908 is about 4827.9299912074. The cubic root of 23308908 is about 285.6542188490.

The spelling of 23308908 in words is "twenty-three million, three hundred eight thousand, nine hundred eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 343 588 686 809 1029 1372 1618 2058 2401 2427 3236 4116 4802 4854 5663 7203 9604 9708 11326 14406 16989 22652 28812 33978 39641 67956 79282 118923 158564 237846 277487 475692 554974 832461 1109948 1664922 1942409 3329844 3884818 5827227 7769636 11654454 23308908