20022423 has 16 divisors (see below), whose sum is σ = 27434496. Its totient is φ = 12983040.

The previous prime is 20022407. The next prime is 20022427. The reversal of 20022423 is 32422002.

It is not a de Polignac number, because 20022423 - 2⁴ = 20022407 is a prime.

It is a super-3 number, since 3×20022423³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29415 + ... + 30087.

It is an arithmetic number, because the mean of its divisors is an integer number (1714656).

Almost surely, 2^20022423 is an apocalyptic number.

20022423 is a deficient number, since it is larger than the sum of its proper divisors (7412073).

20022423 is a wasteful number, since it uses less digits than its factorization.

20022423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20022423 is about 4474.6422203345. The cubic root of 20022423 is about 271.5431660828.

Adding to 20022423 its reverse (32422002), we get a palindrome (52444425).

The spelling of 20022423 in words is "twenty million, twenty-two thousand, four hundred twenty-three".