20883269 has 6 divisors (see below), whose sum is σ = 22954470. Its totient is φ = 18984680.

The previous prime is 20883263. The next prime is 20883271. The reversal of 20883269 is 96238802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20340100 + 543169 = 4510^2 + 737^2 .

It is not a de Polignac number, because 20883269 - 2⁴ = 20883253 is a prime.

It is a super-2 number, since 2×20883269² = 872221848252722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20883263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86174 + ... + 86415.

It is an arithmetic number, because the mean of its divisors is an integer number (3825745).

Almost surely, 2^20883269 is an apocalyptic number.

It is an amenable number.

20883269 is a deficient number, since it is larger than the sum of its proper divisors (2071201).

20883269 is a wasteful number, since it uses less digits than its factorization.

20883269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172611 (or 172600 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20883269 is about 4569.8215501264. The cubic root of 20883269 is about 275.3802739094.

The spelling of 20883269 in words is "twenty million, eight hundred eighty-three thousand, two hundred sixty-nine".