20013297 has 4 divisors (see below), whose sum is σ = 26684400. Its totient is φ = 13342196.

The previous prime is 20013293. The next prime is 20013299. The reversal of 20013297 is 79231002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20013297 - 2² = 20013293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20013293) 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 3 ways as a sum of consecutive naturals, for example, 3335547 + ... + 3335552.

It is an arithmetic number, because the mean of its divisors is an integer number (6671100).

Almost surely, 2^20013297 is an apocalyptic number.

It is an amenable number.

20013297 is a deficient number, since it is larger than the sum of its proper divisors (6671103).

20013297 is an equidigital number, since it uses as much as digits as its factorization.

20013297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671102.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20013297 is about 4473.6223577767. The cubic root of 20013297 is about 271.5019043512.

Adding to 20013297 its reverse (79231002), we get a palindrome (99244299).

The spelling of 20013297 in words is "twenty million, thirteen thousand, two hundred ninety-seven".