20833828 has 6 divisors (see below), whose sum is σ = 36459206. Its totient is φ = 10416912.

The previous prime is 20833811. The next prime is 20833859. The reversal of 20833828 is 82833802.

It can be written as a sum of positive squares in only one way, i.e., 16305444 + 4528384 = 4038^2 + 2128^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20833793 and 20833802.

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, 2604225 + ... + 2604232.

Almost surely, 2^20833828 is an apocalyptic number.

It is an amenable number.

20833828 is a deficient number, since it is larger than the sum of its proper divisors (15625378).

20833828 is a wasteful number, since it uses less digits than its factorization.

20833828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5208461 (or 5208459 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20833828 is about 4564.4088335731. The cubic root of 20833828 is about 275.1627818618.

The spelling of 20833828 in words is "twenty million, eight hundred thirty-three thousand, eight hundred twenty-eight".