20000022 has 32 divisors (see below), whose sum is σ = 47192064. Its totient is φ = 5529600.

The previous prime is 20000003. The next prime is 20000023. The reversal of 20000022 is 22000002.

It is a Harshad number since it is a multiple of its sum of digits (6).

20000022 is a modest number, since divided by 22 gives 20 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6379 + ... + 8982.

It is an arithmetic number, because the mean of its divisors is an integer number (1474752).

Almost surely, 2^20000022 is an apocalyptic number.

20000022 is an abundant number, since it is smaller than the sum of its proper divisors (27192042).

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

20000022 is a wasteful number, since it uses less digits than its factorization.

20000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15404.

The product of its (nonzero) digits is 8, while the sum is 6.

The square root of 20000022 is about 4472.1384146737. The cubic root of 20000022 is about 271.4418611881.

Adding to 20000022 its reverse (22000002), we get a palindrome (42000024).

It can be divided in two parts, 2000002 and 2, that multiplied together give a palindrome (4000004).

The spelling of 20000022 in words is "twenty million, twenty-two", and thus it is an aban number and an uban number.