20326570 has 32 divisors (see below), whose sum is σ = 40896576. Its totient is φ = 7209600.

The previous prime is 20326531. The next prime is 20326571. The reversal of 20326570 is 7562302.

It is not an unprimeable number, because it can be changed into a prime (20326571) 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 15 ways as a sum of consecutive naturals, for example, 2257 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (1278018).

Almost surely, 2^20326570 is an apocalyptic number.

20326570 is an abundant number, since it is smaller than the sum of its proper divisors (20570006).

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

20326570 is a wasteful number, since it uses less digits than its factorization.

20326570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4566.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20326570 is about 4508.4997504713. The cubic root of 20326570 is about 272.9112047803.

Adding to 20326570 its reverse (7562302), we get a palindrome (27888872).

The spelling of 20326570 in words is "twenty million, three hundred twenty-six thousand, five hundred seventy".