20629227 has 4 divisors (see below), whose sum is σ = 27505640. Its totient is φ = 13752816.

The previous prime is 20629223. The next prime is 20629241. The reversal of 20629227 is 72292602.

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

It is not a de Polignac number, because 20629227 - 2² = 20629223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20629194 and 20629203.

It is not an unprimeable number, because it can be changed into a prime (20629223) 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, 3438202 + ... + 3438207.

It is an arithmetic number, because the mean of its divisors is an integer number (6876410).

Almost surely, 2^20629227 is an apocalyptic number.

20629227 is a deficient number, since it is larger than the sum of its proper divisors (6876413).

20629227 is an equidigital number, since it uses as much as digits as its factorization.

20629227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876412.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20629227 is about 4541.9408846880. The cubic root of 20629227 is about 274.2590611114.

The spelling of 20629227 in words is "twenty million, six hundred twenty-nine thousand, two hundred twenty-seven".