20002611 has 16 divisors (see below), whose sum is σ = 28730240. Its totient is φ = 12337920.

The previous prime is 20002603. The next prime is 20002613. The reversal of 20002611 is 11620002.

It is not a de Polignac number, because 20002611 - 2³ = 20002603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20002613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 6531.

It is an arithmetic number, because the mean of its divisors is an integer number (1795640).

Almost surely, 2^20002611 is an apocalyptic number.

20002611 is a deficient number, since it is larger than the sum of its proper divisors (8727629).

20002611 is a wasteful number, since it uses less digits than its factorization.

20002611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8226.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 20002611 is about 4472.4278641472. The cubic root of 20002611 is about 271.4535733862.

Adding to 20002611 its reverse (11620002), we get a palindrome (31622613).

The spelling of 20002611 in words is "twenty million, two thousand, six hundred eleven".