20328536 has 16 divisors (see below), whose sum is σ = 39430800. Its totient is φ = 9813664.

The previous prime is 20328533. The next prime is 20328541. The reversal of 20328536 is 63582302.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 20328499 and 20328508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20328533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43580 + ... + 44043.

It is an arithmetic number, because the mean of its divisors is an integer number (2464425).

Almost surely, 2^20328536 is an apocalyptic number.

It is an amenable number.

20328536 is a deficient number, since it is larger than the sum of its proper divisors (19102264).

20328536 is a wasteful number, since it uses less digits than its factorization.

20328536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87658 (or 87654 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 20328536 is about 4508.7177778167. The cubic root of 20328536 is about 272.9200032172.

The spelling of 20328536 in words is "twenty million, three hundred twenty-eight thousand, five hundred thirty-six".