20540022 has 16 divisors (see below), whose sum is σ = 41187312. Its totient is φ = 6828800.

The previous prime is 20540017. The next prime is 20540053. The reversal of 20540022 is 22004502.

It is a junction number, because it is equal to n+sod(n) for n = 20539983 and 20540010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (2574207).

Almost surely, 2^20540022 is an apocalyptic number.

20540022 is an abundant number, since it is smaller than the sum of its proper divisors (20647290).

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

20540022 is a wasteful number, since it uses less digits than its factorization.

20540022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943.

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 20540022 is about 4532.1101045760. The cubic root of 20540022 is about 273.8631724886.

Adding to 20540022 its reverse (22004502), we get a palindrome (42544524).

The spelling of 20540022 in words is "twenty million, five hundred forty thousand, twenty-two".