20707227 has 6 divisors (see below), whose sum is σ = 29910452. Its totient is φ = 13804812.

The previous prime is 20707187. The next prime is 20707229. The reversal of 20707227 is 72270702.

It is not a de Polignac number, because 20707227 - 2⁸ = 20706971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20707227.

It is not an unprimeable number, because it can be changed into a prime (20707229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150393 + ... + 1150410.

Almost surely, 2^20707227 is an apocalyptic number.

20707227 is a deficient number, since it is larger than the sum of its proper divisors (9203225).

20707227 is a wasteful number, since it uses less digits than its factorization.

20707227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300809 (or 2300806 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20707227 is about 4550.5194209013. The cubic root of 20707227 is about 274.6042881630.

Adding to 20707227 its reverse (72270702), we get a palindrome (92977929).

The spelling of 20707227 in words is "twenty million, seven hundred seven thousand, two hundred twenty-seven".