20802896 has 10 divisors (see below), whose sum is σ = 40305642. Its totient is φ = 10401440.

The previous prime is 20802857. The next prime is 20802907. The reversal of 20802896 is 69820802.

It can be written as a sum of positive squares in only one way, i.e., 11316496 + 9486400 = 3364^2 + 3080^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650075 + ... + 650106.

Almost surely, 2^20802896 is an apocalyptic number.

It is an amenable number.

20802896 is a deficient number, since it is larger than the sum of its proper divisors (19502746).

20802896 is a wasteful number, since it uses less digits than its factorization.

20802896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300189 (or 1300183 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20802896 is about 4561.0191843490. The cubic root of 20802896 is about 275.0265362823.

The spelling of 20802896 in words is "twenty million, eight hundred two thousand, eight hundred ninety-six".