20242623 has 4 divisors (see below), whose sum is σ = 26990168. Its totient is φ = 13495080.

The previous prime is 20242603. The next prime is 20242687. The reversal of 20242623 is 32624202.

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

It is not a de Polignac number, because 20242623 - 2⁵ = 20242591 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 20242623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373768 + ... + 3373773.

It is an arithmetic number, because the mean of its divisors is an integer number (6747542).

Almost surely, 2^20242623 is an apocalyptic number.

20242623 is a deficient number, since it is larger than the sum of its proper divisors (6747545).

20242623 is an equidigital number, since it uses as much as digits as its factorization.

20242623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6747544.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20242623 is about 4499.1802586694. The cubic root of 20242623 is about 272.5349863897.

Adding to 20242623 its reverse (32624202), we get a palindrome (52866825).

The spelling of 20242623 in words is "twenty million, two hundred forty-two thousand, six hundred twenty-three".