20845022 has 8 divisors (see below), whose sum is σ = 34110072. Its totient is φ = 9475000.

The previous prime is 20845021. The next prime is 20845057. The reversal of 20845022 is 22054802.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845021) 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, 473729 + ... + 473772.

It is an arithmetic number, because the mean of its divisors is an integer number (4263759).

Almost surely, 2^20845022 is an apocalyptic number.

20845022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20845022 is a deficient number, since it is larger than the sum of its proper divisors (13265050).

20845022 is a wasteful number, since it uses less digits than its factorization.

20845022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947514.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 20845022 is about 4565.6348956087. The cubic root of 20845022 is about 275.2120546228.

Adding to 20845022 its reverse (22054802), we get a palindrome (42899824).

The spelling of 20845022 in words is "twenty million, eight hundred forty-five thousand, twenty-two".