20822394 has 16 divisors (see below), whose sum is σ = 42267168. Its totient is φ = 6837072.

The previous prime is 20822393. The next prime is 20822407. The reversal of 20822394 is 49322802.

It is not an unprimeable number, because it can be changed into a prime (20822393) 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, 25497 + ... + 26300.

It is an arithmetic number, because the mean of its divisors is an integer number (2641698).

Almost surely, 2^20822394 is an apocalyptic number.

20822394 is an abundant number, since it is smaller than the sum of its proper divisors (21444774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20822394 is a wasteful number, since it uses less digits than its factorization.

20822394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51869.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20822394 is about 4563.1561445999. The cubic root of 20822394 is about 275.1124344654.

The spelling of 20822394 in words is "twenty million, eight hundred twenty-two thousand, three hundred ninety-four".