20002267 has 4 divisors (see below), whose sum is σ = 20467480. Its totient is φ = 19537056.

The previous prime is 20002261. The next prime is 20002313. The reversal of 20002267 is 76220002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20002267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002261) 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, 232542 + ... + 232627.

It is an arithmetic number, because the mean of its divisors is an integer number (5116870).

Almost surely, 2^20002267 is an apocalyptic number.

20002267 is a deficient number, since it is larger than the sum of its proper divisors (465213).

20002267 is an equidigital number, since it uses as much as digits as its factorization.

20002267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465212.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20002267 is about 4472.3894061229. The cubic root of 20002267 is about 271.4520172466.

Adding to 20002267 its reverse (76220002), we get a palindrome (96222269).

The spelling of 20002267 in words is "twenty million, two thousand, two hundred sixty-seven".