20332672 has 16 divisors (see below), whose sum is σ = 40506750. Its totient is φ = 10166272.

The previous prime is 20332661. The next prime is 20332693. The reversal of 20332672 is 27623302.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 46656 = 4504^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79297 + ... + 79552.

Almost surely, 2^20332672 is an apocalyptic number.

It is an amenable number.

20332672 is a deficient number, since it is larger than the sum of its proper divisors (20174078).

20332672 is an equidigital number, since it uses as much as digits as its factorization.

20332672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158863 (or 158851 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 20332672 is about 4509.1764214765. The cubic root of 20332672 is about 272.9385112001.

Adding to 20332672 its reverse (27623302), we get a palindrome (47955974).

The spelling of 20332672 in words is "twenty million, three hundred thirty-two thousand, six hundred seventy-two".