20798036 has 24 divisors (see below), whose sum is σ = 41723136. Its totient is φ = 8886240.

The previous prime is 20797999. The next prime is 20798051. The reversal of 20798036 is 63089702.

It is a junction number, because it is equal to n+sod(n) for n = 20797987 and 20798005.

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 in 7 ways as a sum of consecutive naturals, for example, 10181 + ... + 12051.

It is an arithmetic number, because the mean of its divisors is an integer number (1738464).

Almost surely, 2^20798036 is an apocalyptic number.

It is an amenable number.

20798036 is an abundant number, since it is smaller than the sum of its proper divisors (20925100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20798036 is a wasteful number, since it uses less digits than its factorization.

20798036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2279 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20798036 is about 4560.4863775698. The cubic root of 20798036 is about 275.0051172601.

The spelling of 20798036 in words is "twenty million, seven hundred ninety-eight thousand, thirty-six".