20883212 has 48 divisors (see below), whose sum is σ = 44083200. Its totient is φ = 8643600.

The previous prime is 20883199. The next prime is 20883217. The reversal of 20883212 is 21238802.

It is a super-2 number, since 2×20883212² = 872217086873888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20883217) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42287 + ... + 42777.

It is an arithmetic number, because the mean of its divisors is an integer number (918400).

Almost surely, 2^20883212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20883212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22041600).

20883212 is an abundant number, since it is smaller than the sum of its proper divisors (23199988).

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

20883212 is a wasteful number, since it uses less digits than its factorization.

20883212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20883212 is about 4569.8153135548. The cubic root of 20883212 is about 275.3800233629.

The spelling of 20883212 in words is "twenty million, eight hundred eighty-three thousand, two hundred twelve".