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23907973 = 107223439
BaseRepresentation
bin101101100110…
…0111010000101
31122222122120111
41123030322011
522110023343
62212233021
7410133355
oct133147205
948878514
1023907973
111254a461
12800b771
134c5113b
143264b65
152173c9d
hex16cce85

23907973 has 4 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 23684428.

The previous prime is 23907941. The next prime is 23907979. The reversal of 23907973 is 37970932.

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 23907973 - 25 = 23907941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23907979) 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, 111613 + ... + 111826.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 223907973 is an apocalyptic number.

It is an amenable number.

23907973 is a deficient number, since it is larger than the sum of its proper divisors (223547).

23907973 is a wasteful number, since it uses less digits than its factorization.

23907973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223546.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 23907973 is about 4889.5779981508. The cubic root of 23907973 is about 288.0807587629.

The spelling of 23907973 in words is "twenty-three million, nine hundred seven thousand, nine hundred seventy-three".

Divisors: 1 107 223439 23907973