20298836 has 6 divisors (see below), whose sum is σ = 35522970. Its totient is φ = 10149416.

The previous prime is 20298827. The next prime is 20298851. The reversal of 20298836 is 63889202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 14776336 + 5522500 = 3844^2 + 2350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20298836.

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, 2537351 + ... + 2537358.

It is an arithmetic number, because the mean of its divisors is an integer number (5920495).

Almost surely, 2^20298836 is an apocalyptic number.

It is an amenable number.

20298836 is a deficient number, since it is larger than the sum of its proper divisors (15224134).

20298836 is a wasteful number, since it uses less digits than its factorization.

20298836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5074713 (or 5074711 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20298836 is about 4505.4229546181. The cubic root of 20298836 is about 272.7870263550.

The spelling of 20298836 in words is "twenty million, two hundred ninety-eight thousand, eight hundred thirty-six".