20531876 has 12 divisors (see below), whose sum is σ = 36364272. Its totient is φ = 10142088.

The previous prime is 20531873. The next prime is 20531879. The reversal of 20531876 is 67813502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20531873) and next prime (20531879).

It is not an unprimeable number, because it can be changed into a prime (20531873) 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, 30590 + ... + 31253.

It is an arithmetic number, because the mean of its divisors is an integer number (3030356).

Almost surely, 2^20531876 is an apocalyptic number.

It is an amenable number.

20531876 is a deficient number, since it is larger than the sum of its proper divisors (15832396).

20531876 is a wasteful number, since it uses less digits than its factorization.

20531876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61930 (or 61928 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 20531876 is about 4531.2113170763. The cubic root of 20531876 is about 273.8269637578.

The spelling of 20531876 in words is "twenty million, five hundred thirty-one thousand, eight hundred seventy-six".