20297267 has 8 divisors (see below), whose sum is σ = 20754432. Its totient is φ = 19845000.

The previous prime is 20297243. The next prime is 20297273. The reversal of 20297267 is 76279202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20297267 - 2¹² = 20293171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20297287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (2594304).

Almost surely, 2^20297267 is an apocalyptic number.

20297267 is a deficient number, since it is larger than the sum of its proper divisors (457165).

20297267 is a wasteful number, since it uses less digits than its factorization.

20297267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20297267 is about 4505.2488277564. The cubic root of 20297267 is about 272.7799978096.

The spelling of 20297267 in words is "twenty million, two hundred ninety-seven thousand, two hundred sixty-seven".