20002634 has 8 divisors (see below), whose sum is σ = 31038660. Its totient is φ = 9656416.

The previous prime is 20002613. The next prime is 20002639. The reversal of 20002634 is 43620002.

It can be written as a sum of positive squares in 2 ways, for example, as 19386409 + 616225 = 4403^2 + 785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20002639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172379 + ... + 172494.

Almost surely, 2^20002634 is an apocalyptic number.

20002634 is a deficient number, since it is larger than the sum of its proper divisors (11036026).

20002634 is a wasteful number, since it uses less digits than its factorization.

20002634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344904.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20002634 is about 4472.4304354568. The cubic root of 20002634 is about 271.4536774297.

Adding to 20002634 its reverse (43620002), we get a palindrome (63622636).

The spelling of 20002634 in words is "twenty million, two thousand, six hundred thirty-four".