20087798 has 8 divisors (see below), whose sum is σ = 30150792. Its totient is φ = 10037536.

The previous prime is 20087797. The next prime is 20087813. The reversal of 20087798 is 89778002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20087791) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4061 + ... + 7527.

It is an arithmetic number, because the mean of its divisors is an integer number (3768849).

Almost surely, 2^20087798 is an apocalyptic number.

20087798 is a deficient number, since it is larger than the sum of its proper divisors (10062994).

20087798 is a wasteful number, since it uses less digits than its factorization.

20087798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 20087798 is about 4481.9413204548. The cubic root of 20087798 is about 271.8383825789.

The spelling of 20087798 in words is "twenty million, eighty-seven thousand, seven hundred ninety-eight".