20103632 has 10 divisors (see below), whose sum is σ = 38950818. Its totient is φ = 10051808.

The previous prime is 20103619. The next prime is 20103637. The reversal of 20103632 is 23630102.

It can be written as a sum of positive squares in only one way, i.e., 10394176 + 9709456 = 3224^2 + 3116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20103632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628223 + ... + 628254.

Almost surely, 2^20103632 is an apocalyptic number.

It is an amenable number.

20103632 is a deficient number, since it is larger than the sum of its proper divisors (18847186).

20103632 is a wasteful number, since it uses less digits than its factorization.

20103632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256485 (or 1256479 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20103632 is about 4483.7073945564. The cubic root of 20103632 is about 271.9097884228.

Adding to 20103632 its reverse (23630102), we get a palindrome (43733734).

The spelling of 20103632 in words is "twenty million, one hundred three thousand, six hundred thirty-two".