20389122 has 24 divisors (see below), whose sum is σ = 47575164. Its totient is φ = 6273504.

The previous prime is 20389111. The next prime is 20389129. The reversal of 20389122 is 22198302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 488601 = 4461^2 + 699^2 .

It is not an unprimeable number, because it can be changed into a prime (20389129) 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 11 ways as a sum of consecutive naturals, for example, 43333 + ... + 43800.

Almost surely, 2^20389122 is an apocalyptic number.

20389122 is an abundant number, since it is smaller than the sum of its proper divisors (27186042).

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

20389122 is a wasteful number, since it uses less digits than its factorization.

20389122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87154 (or 87151 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20389122 is about 4515.4315408386. The cubic root of 20389122 is about 273.1908660030.

The spelling of 20389122 in words is "twenty million, three hundred eighty-nine thousand, one hundred twenty-two".