23240737 has 8 divisors (see below), whose sum is σ = 25076520. Its totient is φ = 21411840.

The previous prime is 23240729. The next prime is 23240753. The reversal of 23240737 is 73704232.

It can be written as a sum of positive squares in 4 ways, for example, as 5271616 + 17969121 = 2296^2 + 4239^2 .

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 23240737 - 2³ = 23240729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23240797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6939 + ... + 9727.

It is an arithmetic number, because the mean of its divisors is an integer number (3134565).

Almost surely, 2^23240737 is an apocalyptic number.

It is an amenable number.

23240737 is a deficient number, since it is larger than the sum of its proper divisors (1835783).

23240737 is a wasteful number, since it uses less digits than its factorization.

23240737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 7056, while the sum is 28.

The square root of 23240737 is about 4820.8647564519. The cubic root of 23240737 is about 285.3754649200.

Adding to 23240737 its reverse (73704232), we get a palindrome (96944969).

The spelling of 23240737 in words is "twenty-three million, two hundred forty thousand, seven hundred thirty-seven".