20732328 has 64 divisors (see below), whose sum is σ = 58708800. Its totient is φ = 6776640.

The previous prime is 20732323. The next prime is 20732329. The reversal of 20732328 is 82323702.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20732323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10543 + ... + 12353.

It is an arithmetic number, because the mean of its divisors is an integer number (917325).

Almost surely, 2^20732328 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 20732328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29354400).

20732328 is an abundant number, since it is smaller than the sum of its proper divisors (37976472).

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

20732328 is a wasteful number, since it uses less digits than its factorization.

20732328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 20732328 is about 4553.2766223896. The cubic root of 20732328 is about 274.7152004704.

The spelling of 20732328 in words is "twenty million, seven hundred thirty-two thousand, three hundred twenty-eight".