22052820 has 24 divisors (see below), whose sum is σ = 61748064. Its totient is φ = 5880736.

The previous prime is 22052809. The next prime is 22052827. The reversal of 22052820 is 2825022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22052827) 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, 183714 + ... + 183833.

It is an arithmetic number, because the mean of its divisors is an integer number (2572836).

Almost surely, 2^22052820 is an apocalyptic number.

22052820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22052820 is an abundant number, since it is smaller than the sum of its proper divisors (39695244).

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

22052820 is a wasteful number, since it uses less digits than its factorization.

22052820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367559 (or 367557 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22052820 is about 4696.0430151352. The cubic root of 22052820 is about 280.4280018949.

Adding to 22052820 its reverse (2825022), we get a palindrome (24877842).

The spelling of 22052820 in words is "twenty-two million, fifty-two thousand, eight hundred twenty".