20802050 has 24 divisors (see below), whose sum is σ = 40969476. Its totient is φ = 7831040.

The previous prime is 20802049. The next prime is 20802073. The reversal of 20802050 is 5020802.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 13667809 + 7134241 = 3697^2 + 2671^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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 11 ways as a sum of consecutive naturals, for example, 11387 + ... + 13086.

Almost surely, 2^20802050 is an apocalyptic number.

20802050 is a deficient number, since it is larger than the sum of its proper divisors (20167426).

20802050 is a wasteful number, since it uses less digits than its factorization.

20802050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24502 (or 24497 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20802050 is about 4560.9264409767. The cubic root of 20802050 is about 275.0228080256.

Adding to 20802050 its reverse (5020802), we get a palindrome (25822852).

The spelling of 20802050 in words is "twenty million, eight hundred two thousand, fifty".