20368536 has 64 divisors (see below), whose sum is σ = 52876800. Its totient is φ = 6534528.

The previous prime is 20368487. The next prime is 20368549. The reversal of 20368536 is 63586302.

It is a junction number, because it is equal to n+sod(n) for n = 20368497 and 20368506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85105 + ... + 85343.

It is an arithmetic number, because the mean of its divisors is an integer number (826200).

Almost surely, 2^20368536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20368536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26438400).

20368536 is an abundant number, since it is smaller than the sum of its proper divisors (32508264).

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

20368536 is a wasteful number, since it uses less digits than its factorization.

20368536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 20368536 is about 4513.1514488215. The cubic root of 20368536 is about 273.0988921069.

The spelling of 20368536 in words is "twenty million, three hundred sixty-eight thousand, five hundred thirty-six".