20260634 has 12 divisors (see below), whose sum is σ = 32284734. Its totient is φ = 9534144.

The previous prime is 20260627. The next prime is 20260637. The reversal of 20260634 is 43606202.

It can be written as a sum of positive squares in 3 ways, for example, as 18705625 + 1555009 = 4325^2 + 1247^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20260637) 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, 16949 + ... + 18104.

Almost surely, 2^20260634 is an apocalyptic number.

20260634 is a deficient number, since it is larger than the sum of its proper divisors (12024100).

20260634 is a wasteful number, since it uses less digits than its factorization.

20260634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35089 (or 35072 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20260634 is about 4501.1814004770. The cubic root of 20260634 is about 272.6157923296.

Adding to 20260634 its reverse (43606202), we get a palindrome (63866836).

The spelling of 20260634 in words is "twenty million, two hundred sixty thousand, six hundred thirty-four".