20161146 has 16 divisors (see below), whose sum is σ = 40396608. Its totient is φ = 6708000.

The previous prime is 20161139. The next prime is 20161151. The reversal of 20161146 is 64116102.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 811 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (2524788).

Almost surely, 2^20161146 is an apocalyptic number.

20161146 is an abundant number, since it is smaller than the sum of its proper divisors (20235462).

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

20161146 is a wasteful number, since it uses less digits than its factorization.

20161146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20161146 is about 4490.1164795582. The cubic root of 20161146 is about 272.1688416102.

Adding to 20161146 its reverse (64116102), we get a palindrome (84277248).

The spelling of 20161146 in words is "twenty million, one hundred sixty-one thousand, one hundred forty-six".