20422353 has 8 divisors (see below), whose sum is σ = 31119808. Its totient is φ = 11669904.

The previous prime is 20422343. The next prime is 20422357. The reversal of 20422353 is 35322402.

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

It is not a de Polignac number, because 20422353 - 2⁸ = 20422097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 972493 = 20422353 / (2 + 0 + 4 + 2 + 2 + 3 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20422357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486226 + ... + 486267.

It is an arithmetic number, because the mean of its divisors is an integer number (3889976).

Almost surely, 2^20422353 is an apocalyptic number.

It is an amenable number.

20422353 is a deficient number, since it is larger than the sum of its proper divisors (10697455).

20422353 is an equidigital number, since it uses as much as digits as its factorization.

20422353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972503.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 20422353 is about 4519.1097574633. The cubic root of 20422353 is about 273.3392045470.

Adding to 20422353 its reverse (35322402), we get a palindrome (55744755).

The spelling of 20422353 in words is "twenty million, four hundred twenty-two thousand, three hundred fifty-three".