20597382 has 96 divisors (see below), whose sum is σ = 51737760. Its totient is φ = 6065280.

The previous prime is 20597333. The next prime is 20597383. The reversal of 20597382 is 28379502.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20597383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337632 + ... + 337692.

It is an arithmetic number, because the mean of its divisors is an integer number (538935).

Almost surely, 2^20597382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20597382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25868880).

20597382 is an abundant number, since it is smaller than the sum of its proper divisors (31140378).

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

20597382 is a wasteful number, since it uses less digits than its factorization.

20597382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 20597382 is about 4538.4338708414. The cubic root of 20597382 is about 274.1178653584.

The spelling of 20597382 in words is "twenty million, five hundred ninety-seven thousand, three hundred eighty-two".