20002753 has 4 divisors (see below), whose sum is σ = 20041668. Its totient is φ = 19963840.

The previous prime is 20002739. The next prime is 20002757. The reversal of 20002753 is 35720002.

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 5992704 + 14010049 = 2448^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002753 - 2¹³ = 19994561 is a prime.

It is a super-2 number, since 2×20002753² = 800220255158018, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20002753.

It is not an unprimeable number, because it can be changed into a prime (20002757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18676 + ... + 19717.

It is an arithmetic number, because the mean of its divisors is an integer number (5010417).

Almost surely, 2^20002753 is an apocalyptic number.

It is an amenable number.

20002753 is a deficient number, since it is larger than the sum of its proper divisors (38915).

20002753 is an equidigital number, since it uses as much as digits as its factorization.

20002753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38914.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 20002753 is about 4472.4437391654. The cubic root of 20002753 is about 271.4542157409.

Adding to 20002753 its reverse (35720002), we get a palindrome (55722755).

It can be divided in two parts, 2000 and 2753, that added together give a triangular number (4753 = T₉₇).

The spelling of 20002753 in words is "twenty million, two thousand, seven hundred fifty-three".