20222423 has 4 divisors (see below), whose sum is σ = 21778008. Its totient is φ = 18666840.

The previous prime is 20222413. The next prime is 20222437. The reversal of 20222423 is 32422202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32422202 = 2 ⋅16211101.

It is a cyclic number.

It is not a de Polignac number, because 20222423 - 2⁴ = 20222407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222413) 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, 777773 + ... + 777798.

It is an arithmetic number, because the mean of its divisors is an integer number (5444502).

Almost surely, 2^20222423 is an apocalyptic number.

20222423 is a deficient number, since it is larger than the sum of its proper divisors (1555585).

20222423 is a wasteful number, since it uses less digits than its factorization.

20222423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555584.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20222423 is about 4496.9348449805. The cubic root of 20222423 is about 272.4443025070. Note that the first 3 decimals are identical.

Adding to 20222423 its reverse (32422202), we get a palindrome (52644625).

The spelling of 20222423 in words is "twenty million, two hundred twenty-two thousand, four hundred twenty-three".