20761227 has 12 divisors (see below), whose sum is σ = 30956224. Its totient is φ = 13394160.

The previous prime is 20761207. The next prime is 20761229. The reversal of 20761227 is 72216702.

20761227 is a `hidden beast` number, since 20 + 7 + 612 + 27 = 666.

It is not a de Polignac number, because 20761227 - 2⁷ = 20761099 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 20761227.

It is not an unprimeable number, because it can be changed into a prime (20761229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36928 + ... + 37485.

Almost surely, 2^20761227 is an apocalyptic number.

20761227 is a deficient number, since it is larger than the sum of its proper divisors (10194997).

20761227 is a wasteful number, since it uses less digits than its factorization.

20761227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74450 (or 74447 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20761227 is about 4556.4489462738. The cubic root of 20761227 is about 274.8427839668.

Adding to 20761227 its reverse (72216702), we get a palindrome (92977929).

The spelling of 20761227 in words is "twenty million, seven hundred sixty-one thousand, two hundred twenty-seven".