22020140 has 24 divisors (see below), whose sum is σ = 46388160. Its totient is φ = 8780288.

The previous prime is 22020133. The next prime is 22020161. The reversal of 22020140 is 4102022.

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, 5501 + ... + 8619.

It is an arithmetic number, because the mean of its divisors is an integer number (1932840).

Almost surely, 2^22020140 is an apocalyptic number.

22020140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020140 is an abundant number, since it is smaller than the sum of its proper divisors (24368020).

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

22020140 is a wasteful number, since it uses less digits than its factorization.

22020140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22020140 is about 4692.5621999074. The cubic root of 22020140 is about 280.2894116417.

Adding to 22020140 its reverse (4102022), we get a palindrome (26122162).

The spelling of 22020140 in words is "twenty-two million, twenty thousand, one hundred forty".