20810896 has 10 divisors (see below), whose sum is σ = 40321142. Its totient is φ = 10405440.

The previous prime is 20810887. The next prime is 20810897. The reversal of 20810896 is 69801802.

It can be written as a sum of positive squares in only one way, i.e., 19927296 + 883600 = 4464^2 + 940^2 .

It is not an unprimeable number, because it can be changed into a prime (20810897) 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 as a sum of consecutive naturals, namely, 650325 + ... + 650356.

Almost surely, 2^20810896 is an apocalyptic number.

It is an amenable number.

20810896 is a deficient number, since it is larger than the sum of its proper divisors (19510246).

20810896 is a wasteful number, since it uses less digits than its factorization.

20810896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300689 (or 1300683 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 20810896 is about 4561.8960970193. The cubic root of 20810896 is about 275.0617866678.

The spelling of 20810896 in words is "twenty million, eight hundred ten thousand, eight hundred ninety-six".