20240753 has 16 divisors (see below), whose sum is σ = 22997520. Its totient is φ = 17681664.

The previous prime is 20240749. The next prime is 20240777. The reversal of 20240753 is 35704202.

It can be written as a sum of positive squares in 8 ways, for example, as 3659569 + 16581184 = 1913^2 + 4072^2 .

It is not a de Polignac number, because 20240753 - 2² = 20240749 is a prime.

It is a super-3 number, since 3×20240753³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20240723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19475 + ... + 20487.

It is an arithmetic number, because the mean of its divisors is an integer number (1437345).

Almost surely, 2^20240753 is an apocalyptic number.

It is an amenable number.

20240753 is a deficient number, since it is larger than the sum of its proper divisors (2756767).

20240753 is a wasteful number, since it uses less digits than its factorization.

20240753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20240753 is about 4498.9724382352. The cubic root of 20240753 is about 272.5265939312.

Adding to 20240753 its reverse (35704202), we get a palindrome (55944955).

The spelling of 20240753 in words is "twenty million, two hundred forty thousand, seven hundred fifty-three".