20289282 has 32 divisors (see below), whose sum is σ = 43872192. Its totient is φ = 6218304.

The previous prime is 20289281. The next prime is 20289287. The reversal of 20289282 is 28298202.

It is not an unprimeable number, because it can be changed into a prime (20289281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36148 + ... + 36704.

It is an arithmetic number, because the mean of its divisors is an integer number (1371006).

Almost surely, 2^20289282 is an apocalyptic number.

20289282 is an abundant number, since it is smaller than the sum of its proper divisors (23582910).

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

20289282 is a wasteful number, since it uses less digits than its factorization.

20289282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 20289282 is about 4504.3625520155. The cubic root of 20289282 is about 272.7442223203.

The spelling of 20289282 in words is "twenty million, two hundred eighty-nine thousand, two hundred eighty-two".