20022455 has 8 divisors (see below), whose sum is σ = 24052032. Its totient is φ = 16001248.

The previous prime is 20022451. The next prime is 20022461. The reversal of 20022455 is 55422002.

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

It is a cyclic number.

It is not a de Polignac number, because 20022455 - 2² = 20022451 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 (20022451) 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, 6089 + ... + 8781.

It is an arithmetic number, because the mean of its divisors is an integer number (3006504).

Almost surely, 2^20022455 is an apocalyptic number.

20022455 is a deficient number, since it is larger than the sum of its proper divisors (4029577).

20022455 is a wasteful number, since it uses less digits than its factorization.

20022455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 20022455 is about 4474.6457960379. The cubic root of 20022455 is about 271.5433107435.

Adding to 20022455 its reverse (55422002), we get a palindrome (75444457).

The spelling of 20022455 in words is "twenty million, twenty-two thousand, four hundred fifty-five".