20922158 has 8 divisors (see below), whose sum is σ = 31404360. Its totient is φ = 10454040.

The previous prime is 20922151. The next prime is 20922163. The reversal of 20922158 is 85122902.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20922158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1808 + ... + 6716.

It is an arithmetic number, because the mean of its divisors is an integer number (3925545).

Almost surely, 2^20922158 is an apocalyptic number.

20922158 is a deficient number, since it is larger than the sum of its proper divisors (10482202).

20922158 is a wasteful number, since it uses less digits than its factorization.

20922158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7042.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 20922158 is about 4574.0745512071. The cubic root of 20922158 is about 275.5511064024.

The spelling of 20922158 in words is "twenty million, nine hundred twenty-two thousand, one hundred fifty-eight".