20013277 has 12 divisors (see below), whose sum is σ = 21165300. Its totient is φ = 18916352.

The previous prime is 20013271. The next prime is 20013293. The reversal of 20013277 is 77231002.

It can be written as a sum of positive squares in 6 ways, for example, as 749956 + 19263321 = 866^2 + 4389^2 .

It is not a de Polignac number, because 20013277 - 2³ = 20013269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44349 + ... + 44797.

It is an arithmetic number, because the mean of its divisors is an integer number (1763775).

Almost surely, 2^20013277 is an apocalyptic number.

It is an amenable number.

20013277 is a deficient number, since it is larger than the sum of its proper divisors (1152023).

20013277 is an equidigital number, since it uses as much as digits as its factorization.

20013277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 22.

The square root of 20013277 is about 4473.6201224512. The cubic root of 20013277 is about 271.5018139107.

Adding to 20013277 its reverse (77231002), we get a palindrome (97244279).

The spelling of 20013277 in words is "twenty million, thirteen thousand, two hundred seventy-seven".