Search a number
-
+
23945969 = 43556883
BaseRepresentation
bin101101101011…
…0001011110001
31200001120200202
41123112023301
522112232334
62213124545
7410352215
oct133261361
950046622
1023945969
1112575a63
128029755
134c65518
143274945
15218017e
hex16d62f1

23945969 has 4 divisors (see below), whose sum is σ = 24502896. Its totient is φ = 23389044.

The previous prime is 23945959. The next prime is 23946007. The reversal of 23945969 is 96954932.

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 23945969 - 24 = 23945953 is a prime.

It is a super-2 number, since 2×239459692 = 1146818862697922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23945959) 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, 278399 + ... + 278484.

It is an arithmetic number, because the mean of its divisors is an integer number (6125724).

Almost surely, 223945969 is an apocalyptic number.

It is an amenable number.

23945969 is a deficient number, since it is larger than the sum of its proper divisors (556927).

23945969 is an equidigital number, since it uses as much as digits as its factorization.

23945969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556926.

The product of its digits is 524880, while the sum is 47.

The square root of 23945969 is about 4893.4618625264. The cubic root of 23945969 is about 288.2332897893.

The spelling of 23945969 in words is "twenty-three million, nine hundred forty-five thousand, nine hundred sixty-nine".

Divisors: 1 43 556883 23945969