20743112 has 16 divisors (see below), whose sum is σ = 41885340. Its totient is φ = 9573696.

The previous prime is 20743103. The next prime is 20743181. The reversal of 20743112 is 21134702.

It can be written as a sum of positive squares in 2 ways, for example, as 16924996 + 3818116 = 4114^2 + 1954^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 99623 + ... + 99830.

Almost surely, 2^20743112 is an apocalyptic number.

It is an amenable number.

20743112 is an abundant number, since it is smaller than the sum of its proper divisors (21142228).

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

20743112 is a wasteful number, since it uses less digits than its factorization.

20743112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199472 (or 199468 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 20743112 is about 4554.4606705954. The cubic root of 20743112 is about 274.7628236029.

Adding to 20743112 its reverse (21134702), we get a palindrome (41877814).

The spelling of 20743112 in words is "twenty million, seven hundred forty-three thousand, one hundred twelve".