20011146 has 16 divisors (see below), whose sum is σ = 40084608. Its totient is φ = 6660000.

The previous prime is 20011139. The next prime is 20011153. The reversal of 20011146 is 64111002.

It is an interprime number because it is at equal distance from previous prime (20011139) and next prime (20011153).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2286 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (2505288).

Almost surely, 2^20011146 is an apocalyptic number.

20011146 is an abundant number, since it is smaller than the sum of its proper divisors (20073462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20011146 is a wasteful number, since it uses less digits than its factorization.

20011146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 20011146 is about 4473.3819421105. The cubic root of 20011146 is about 271.4921771264.

Adding to 20011146 its reverse (64111002), we get a palindrome (84122148).

The spelling of 20011146 in words is "twenty million, eleven thousand, one hundred forty-six".