20320532 has 24 divisors (see below), whose sum is σ = 36976800. Its totient is φ = 9759456.

The previous prime is 20320507. The next prime is 20320537. The reversal of 20320532 is 23502302.

It is a self number, because there is not a number n which added to its sum of digits gives 20320532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20320537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32519 + ... + 33137.

It is an arithmetic number, because the mean of its divisors is an integer number (1540700).

Almost surely, 2^20320532 is an apocalyptic number.

It is an amenable number.

20320532 is a deficient number, since it is larger than the sum of its proper divisors (16656268).

20320532 is a wasteful number, since it uses less digits than its factorization.

20320532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 933 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 20320532 is about 4507.8300766555. The cubic root of 20320532 is about 272.8841793805.

Adding to 20320532 its reverse (23502302), we get a palindrome (43822834).

The spelling of 20320532 in words is "twenty million, three hundred twenty thousand, five hundred thirty-two".