20321876 has 12 divisors (see below), whose sum is σ = 35644308. Its totient is φ = 10137792.

The previous prime is 20321869. The next prime is 20321879. The reversal of 20321876 is 67812302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9759376 + 10562500 = 3124^2 + 3250^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321879) by changing a digit.

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, 3731 + ... + 7386.

It is an arithmetic number, because the mean of its divisors is an integer number (2970359).

Almost surely, 2^20321876 is an apocalyptic number.

It is an amenable number.

20321876 is a deficient number, since it is larger than the sum of its proper divisors (15322432).

20321876 is a wasteful number, since it uses less digits than its factorization.

20321876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11578 (or 11576 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20321876 is about 4507.9791481328. The cubic root of 20321876 is about 272.8901954345.

The spelling of 20321876 in words is "twenty million, three hundred twenty-one thousand, eight hundred seventy-six".