20627371 has 2 divisors, whose sum is σ = 20627372. Its totient is φ = 20627370.

The previous prime is 20627351. The next prime is 20627393. The reversal of 20627371 is 17372602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20627371 - 2¹⁵ = 20594603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20627311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10313685 + 10313686.

It is an arithmetic number, because the mean of its divisors is an integer number (10313686).

Almost surely, 2^20627371 is an apocalyptic number.

20627371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20627371 is an equidigital number, since it uses as much as digits as its factorization.

20627371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 20627371 is about 4541.7365621533. The cubic root of 20627371 is about 274.2508358867.

Adding to 20627371 its reverse (17372602), we get a palindrome (37999973).

The spelling of 20627371 in words is "twenty million, six hundred twenty-seven thousand, three hundred seventy-one".