20328396 has 48 divisors (see below), whose sum is σ = 54794880. Its totient is φ = 5797120.

The previous prime is 20328367. The next prime is 20328419. The reversal of 20328396 is 69382302.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 2286 + ... + 6773.

It is an arithmetic number, because the mean of its divisors is an integer number (1141560).

Almost surely, 2^20328396 is an apocalyptic number.

It is an amenable number.

20328396 is an abundant number, since it is smaller than the sum of its proper divisors (34466484).

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

20328396 is a wasteful number, since it uses less digits than its factorization.

20328396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9094 (or 9092 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 20328396 is about 4508.7022523116. The cubic root of 20328396 is about 272.9193766942.

The spelling of 20328396 in words is "twenty million, three hundred twenty-eight thousand, three hundred ninety-six".