20161296 has 30 divisors (see below), whose sum is σ = 56424030. Its totient is φ = 6720384.

The previous prime is 20161291. The next prime is 20161321. The reversal of 20161296 is 69216102.

It can be written as a sum of positive squares in only one way, i.e., 17338896 + 2822400 = 4164^2 + 1680^2 .

It is not an unprimeable number, because it can be changed into a prime (20161291) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69861 + ... + 70148.

It is an arithmetic number, because the mean of its divisors is an integer number (1880801).

Almost surely, 2^20161296 is an apocalyptic number.

It is an amenable number.

20161296 is an abundant number, since it is smaller than the sum of its proper divisors (36262734).

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

20161296 is a wasteful number, since it uses less digits than its factorization.

20161296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140023 (or 140014 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 20161296 is about 4490.1331828800. The cubic root of 20161296 is about 272.1695165921.

Adding to 20161296 its reverse (69216102), we get a palindrome (89377398).

The spelling of 20161296 in words is "twenty million, one hundred sixty-one thousand, two hundred ninety-six".