20260220 has 24 divisors (see below), whose sum is σ = 42757008. Its totient is φ = 8064000.

The previous prime is 20260211. The next prime is 20260237. The reversal of 20260220 is 2206202.

It is a junction number, because it is equal to n+sod(n) for n = 20260195 and 20260204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1820 + ... + 6620.

It is an arithmetic number, because the mean of its divisors is an integer number (1781542).

Almost surely, 2^20260220 is an apocalyptic number.

20260220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20260220 is an abundant number, since it is smaller than the sum of its proper divisors (22496788).

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

20260220 is a wasteful number, since it uses less digits than its factorization.

20260220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20260220 is about 4501.1354123154. The cubic root of 20260220 is about 272.6139354659.

Adding to 20260220 its reverse (2206202), we get a palindrome (22466422).

The spelling of 20260220 in words is "twenty million, two hundred sixty thousand, two hundred twenty".