20240923 has 4 divisors (see below), whose sum is σ = 20893888. Its totient is φ = 19587960.

The previous prime is 20240903. The next prime is 20240933. The reversal of 20240923 is 32904202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20240923 - 2⁹ = 20240411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20240894 and 20240903.

It is not an unprimeable number, because it can be changed into a prime (20240903) 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 3 ways as a sum of consecutive naturals, for example, 326436 + ... + 326497.

It is an arithmetic number, because the mean of its divisors is an integer number (5223472).

Almost surely, 2^20240923 is an apocalyptic number.

20240923 is a deficient number, since it is larger than the sum of its proper divisors (652965).

20240923 is an equidigital number, since it uses as much as digits as its factorization.

20240923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652964.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20240923 is about 4498.9913313986. The cubic root of 20240923 is about 272.5273569033.

The spelling of 20240923 in words is "twenty million, two hundred forty thousand, nine hundred twenty-three".