20161124 has 12 divisors (see below), whose sum is σ = 35336700. Its totient is φ = 10064928.

The previous prime is 20161103. The next prime is 20161139. The reversal of 20161124 is 42116102.

It can be written as a sum of positive squares in 2 ways, for example, as 2788900 + 17372224 = 1670^2 + 4168^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719 + ... + 6390.

It is an arithmetic number, because the mean of its divisors is an integer number (2944725).

Almost surely, 2^20161124 is an apocalyptic number.

It is an amenable number.

20161124 is a deficient number, since it is larger than the sum of its proper divisors (15175576).

20161124 is a wasteful number, since it uses less digits than its factorization.

20161124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822 (or 7820 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 20161124 is about 4490.1140297324. The cubic root of 20161124 is about 272.1687426126.

Adding to 20161124 its reverse (42116102), we get a palindrome (62277226).

The spelling of 20161124 in words is "twenty million, one hundred sixty-one thousand, one hundred twenty-four".