20480753 has 4 divisors (see below), whose sum is σ = 20509428. Its totient is φ = 20452080.

The previous prime is 20480743. The next prime is 20480783. The reversal of 20480753 is 35708402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16224784 + 4255969 = 4028^2 + 2063^2 .

It is a cyclic number.

It is not a de Polignac number, because 20480753 - 2¹⁸ = 20218609 is a prime.

It is a super-3 number, since 3×20480753³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20480723) 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 3 ways as a sum of consecutive naturals, for example, 13238 + ... + 14703.

It is an arithmetic number, because the mean of its divisors is an integer number (5127357).

Almost surely, 2^20480753 is an apocalyptic number.

It is an amenable number.

20480753 is a deficient number, since it is larger than the sum of its proper divisors (28675).

20480753 is an equidigital number, since it uses as much as digits as its factorization.

20480753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28674.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20480753 is about 4525.5665943614. The cubic root of 20480753 is about 273.5995045831.

The spelling of 20480753 in words is "twenty million, four hundred eighty thousand, seven hundred fifty-three".