23940745 has 8 divisors (see below), whose sum is σ = 28983816. Its totient is φ = 18982656.

The previous prime is 23940659. The next prime is 23940767. The reversal of 23940745 is 54704932.

It can be written as a sum of positive squares in 4 ways, for example, as 1784896 + 22155849 = 1336^2 + 4707^2 .

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 23940745 - 2⁷ = 23940617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23940745.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20622 + ... + 21751.

It is an arithmetic number, because the mean of its divisors is an integer number (3622977).

Almost surely, 2^23940745 is an apocalyptic number.

It is an amenable number.

23940745 is a deficient number, since it is larger than the sum of its proper divisors (5043071).

23940745 is a wasteful number, since it uses less digits than its factorization.

23940745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42491.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 23940745 is about 4892.9280599657. The cubic root of 23940745 is about 288.2123281511.

The spelling of 23940745 in words is "twenty-three million, nine hundred forty thousand, seven hundred forty-five".