20113146 has 24 divisors (see below), whose sum is σ = 43845984. Its totient is φ = 6663240.

The previous prime is 20113139. The next prime is 20113169. The reversal of 20113146 is 64131102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (1826916).

Almost surely, 2^20113146 is an apocalyptic number.

20113146 is an abundant number, since it is smaller than the sum of its proper divisors (23732838).

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

20113146 is a wasteful number, since it uses less digits than its factorization.

20113146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866 (or 6863 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20113146 is about 4484.7682214358. The cubic root of 20113146 is about 271.9526752296.

Adding to 20113146 its reverse (64131102), we get a palindrome (84244248).

The spelling of 20113146 in words is "twenty million, one hundred thirteen thousand, one hundred forty-six".