20595330 has 128 divisors (see below), whose sum is σ = 66562560. Its totient is φ = 4423680.

The previous prime is 20595319. The next prime is 20595349. The reversal of 20595330 is 3359502.

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

It is a junction number, because it is equal to n+sod(n) for n = 20595294 and 20595303.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 31810 + ... + 32450.

It is an arithmetic number, because the mean of its divisors is an integer number (520020).

Almost surely, 2^20595330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20595330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33281280).

20595330 is an abundant number, since it is smaller than the sum of its proper divisors (45967230).

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

20595330 is a wasteful number, since it uses less digits than its factorization.

20595330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 20595330 is about 4538.2077960358. The cubic root of 20595330 is about 274.1087621215.

The spelling of 20595330 in words is "twenty million, five hundred ninety-five thousand, three hundred thirty".