20123296 has 24 divisors (see below), whose sum is σ = 39724020. Its totient is φ = 10034688.

The previous prime is 20123293. The next prime is 20123339. The reversal of 20123296 is 69232102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15713296 + 4410000 = 3964^2 + 2100^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20123296.

It is not an unprimeable number, because it can be changed into a prime (20123293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17260 + ... + 18388.

Almost surely, 2^20123296 is an apocalyptic number.

It is an amenable number.

20123296 is a deficient number, since it is larger than the sum of its proper divisors (19600724).

20123296 is a wasteful number, since it uses less digits than its factorization.

20123296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696 (or 1688 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20123296 is about 4485.8996867964. The cubic root of 20123296 is about 271.9984140623.

Adding to 20123296 its reverse (69232102), we get a palindrome (89355398).

The spelling of 20123296 in words is "twenty million, one hundred twenty-three thousand, two hundred ninety-six".