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23105969 = 49147059
BaseRepresentation
bin101100000100…
…1000110110001
31121110220102122
41120021012301
521403342334
62143124025
7400253225
oct130110661
947426378
1023105969
1112051947
1278a3615
134a30093
1430d6785
15206632e
hex16091b1

23105969 has 4 divisors (see below), whose sum is σ = 23153520. Its totient is φ = 23058420.

The previous prime is 23105963. The next prime is 23105981. The reversal of 23105969 is 96950132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23105969 - 28 = 23105713 is a prime.

It is a super-2 number, since 2×231059692 = 1067771606857922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23039 + ... + 24020.

It is an arithmetic number, because the mean of its divisors is an integer number (5788380).

Almost surely, 223105969 is an apocalyptic number.

It is an amenable number.

23105969 is a deficient number, since it is larger than the sum of its proper divisors (47551).

23105969 is an equidigital number, since it uses as much as digits as its factorization.

23105969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47550.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 23105969 is about 4806.8668589841. The cubic root of 23105969 is about 284.8227850792.

The spelling of 23105969 in words is "twenty-three million, one hundred five thousand, nine hundred sixty-nine".

Divisors: 1 491 47059 23105969