20632267 has 4 divisors (see below), whose sum is σ = 21297856. Its totient is φ = 19966680.

The previous prime is 20632259. The next prime is 20632277. The reversal of 20632267 is 76223602.

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

It is a cyclic number.

It is not a de Polignac number, because 20632267 - 2³ = 20632259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20632277) 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, 332748 + ... + 332809.

It is an arithmetic number, because the mean of its divisors is an integer number (5324464).

Almost surely, 2^20632267 is an apocalyptic number.

20632267 is a deficient number, since it is larger than the sum of its proper divisors (665589).

20632267 is an equidigital number, since it uses as much as digits as its factorization.

20632267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665588.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 20632267 is about 4542.2755310527. The cubic root of 20632267 is about 274.2725323965.

Adding to 20632267 its reverse (76223602), we get a palindrome (96855869).

The spelling of 20632267 in words is "twenty million, six hundred thirty-two thousand, two hundred sixty-seven".