20048321 has 8 divisors (see below), whose sum is σ = 21576744. Its totient is φ = 18558720.

The previous prime is 20048311. The next prime is 20048359. The reversal of 20048321 is 12384002.

It can be written as a sum of positive squares in 4 ways, for example, as 4752400 + 15295921 = 2180^2 + 3911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20048321 - 2¹⁸ = 19786177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20048293 and 20048302.

It is not an unprimeable number, because it can be changed into a prime (20048311) 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, 8630 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (2697093).

Almost surely, 2^20048321 is an apocalyptic number.

It is an amenable number.

20048321 is a deficient number, since it is larger than the sum of its proper divisors (1528423).

20048321 is a wasteful number, since it uses less digits than its factorization.

20048321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19411.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20048321 is about 4477.5351478241. The cubic root of 20048321 is about 271.6601914641.

The spelling of 20048321 in words is "twenty million, forty-eight thousand, three hundred twenty-one".