23981445 has 24 divisors (see below), whose sum is σ = 42911232. Its totient is φ = 12376800.

The previous prime is 23981443. The next prime is 23981453. The reversal of 23981445 is 54418932.

It is not a de Polignac number, because 23981445 - 2¹ = 23981443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23981443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7201 + ... + 9990.

It is an arithmetic number, because the mean of its divisors is an integer number (1787968).

Almost surely, 2^23981445 is an apocalyptic number.

It is an amenable number.

23981445 is a deficient number, since it is larger than the sum of its proper divisors (18929787).

23981445 is a wasteful number, since it uses less digits than its factorization.

23981445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17233 (or 17230 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 23981445 is about 4897.0853576388. The cubic root of 23981445 is about 288.3755589497.

The spelling of 23981445 in words is "twenty-three million, nine hundred eighty-one thousand, four hundred forty-five".