20221158 has 16 divisors (see below), whose sum is σ = 40621680. Its totient is φ = 6710496.

The previous prime is 20221153. The next prime is 20221183. The reversal of 20221158 is 85112202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221151) 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, 5985 + ... + 8732.

It is an arithmetic number, because the mean of its divisors is an integer number (2538855).

Almost surely, 2^20221158 is an apocalyptic number.

20221158 is an abundant number, since it is smaller than the sum of its proper divisors (20400522).

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

20221158 is a wasteful number, since it uses less digits than its factorization.

20221158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14951.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 20221158 is about 4496.7941914213. The cubic root of 20221158 is about 272.4386215322.

The spelling of 20221158 in words is "twenty million, two hundred twenty-one thousand, one hundred fifty-eight".