20731076 has 24 divisors (see below), whose sum is σ = 37636704. Its totient is φ = 9984320.

The previous prime is 20731069. The next prime is 20731091. The reversal of 20731076 is 67013702.

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 7 ways as a sum of consecutive naturals, for example, 12851 + ... + 14373.

It is an arithmetic number, because the mean of its divisors is an integer number (1568196).

Almost surely, 2^20731076 is an apocalyptic number.

It is an amenable number.

20731076 is a deficient number, since it is larger than the sum of its proper divisors (16905628).

20731076 is a wasteful number, since it uses less digits than its factorization.

20731076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 20731076 is about 4553.1391369032. The cubic root of 20731076 is about 274.7096704538.

Adding to 20731076 its reverse (67013702), we get a palindrome (87744778).

The spelling of 20731076 in words is "twenty million, seven hundred thirty-one thousand, seventy-six".