23722745 has 8 divisors (see below), whose sum is σ = 28566216. Its totient is φ = 18912256.

The previous prime is 23722709. The next prime is 23722753. The reversal of 23722745 is 54722732.

It can be written as a sum of positive squares in 4 ways, for example, as 15178816 + 8543929 = 3896^2 + 2923^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23722745 - 2⁶ = 23722681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6632 + ... + 9561.

It is an arithmetic number, because the mean of its divisors is an integer number (3570777).

Almost surely, 2^23722745 is an apocalyptic number.

It is an amenable number.

23722745 is a deficient number, since it is larger than the sum of its proper divisors (4843471).

23722745 is a wasteful number, since it uses less digits than its factorization.

23722745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16491.

The product of its digits is 23520, while the sum is 32.

The square root of 23722745 is about 4870.6000657003. The cubic root of 23722745 is about 287.3348566387.

The spelling of 23722745 in words is "twenty-three million, seven hundred twenty-two thousand, seven hundred forty-five".