23240545 has 8 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 17992560.

The previous prime is 23240537. The next prime is 23240549. The reversal of 23240545 is 54504232.

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

It is not a de Polignac number, because 23240545 - 2³ = 23240537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23240549) by changing a digit.

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, 74815 + ... + 75124.

It is an arithmetic number, because the mean of its divisors is an integer number (3598560).

Almost surely, 2^23240545 is an apocalyptic number.

It is an amenable number.

23240545 is a deficient number, since it is larger than the sum of its proper divisors (5547935).

23240545 is a wasteful number, since it uses less digits than its factorization.

23240545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149975.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 23240545 is about 4820.8448429710. The cubic root of 23240545 is about 285.3746790551.

Adding to 23240545 its reverse (54504232), we get a palindrome (77744777).

The spelling of 23240545 in words is "twenty-three million, two hundred forty thousand, five hundred forty-five".