20636328 has 32 divisors (see below), whose sum is σ = 53256960. Its totient is φ = 6656640.

The previous prime is 20636327. The next prime is 20636333. The reversal of 20636328 is 82363602.

It is a junction number, because it is equal to n+sod(n) for n = 20636295 and 20636304.

It is not an unprimeable number, because it can be changed into a prime (20636321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13125 + ... + 14612.

It is an arithmetic number, because the mean of its divisors is an integer number (1664280).

Almost surely, 2^20636328 is an apocalyptic number.

It is an amenable number.

20636328 is an abundant number, since it is smaller than the sum of its proper divisors (32620632).

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

20636328 is a wasteful number, since it uses less digits than its factorization.

20636328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27777 (or 27773 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20636328 is about 4542.7225316984. The cubic root of 20636328 is about 274.2905260193.

The spelling of 20636328 in words is "twenty million, six hundred thirty-six thousand, three hundred twenty-eight".