23723645 has 8 divisors (see below), whose sum is σ = 31056480. Its totient is φ = 17253520.

The previous prime is 23723639. The next prime is 23723683. The reversal of 23723645 is 54632732.

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

It is not a de Polignac number, because 23723645 - 2¹⁶ = 23658109 is a prime.

It is a super-2 number, since 2×23723645² = 1125622664172050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215615 + ... + 215724.

It is an arithmetic number, because the mean of its divisors is an integer number (3882060).

Almost surely, 2^23723645 is an apocalyptic number.

It is an amenable number.

23723645 is a deficient number, since it is larger than the sum of its proper divisors (7332835).

23723645 is a wasteful number, since it uses less digits than its factorization.

23723645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431355.

The product of its digits is 30240, while the sum is 32.

The square root of 23723645 is about 4870.6924559040. The cubic root of 23723645 is about 287.3384902556.

The spelling of 23723645 in words is "twenty-three million, seven hundred twenty-three thousand, six hundred forty-five".