20075403 has 4 divisors (see below), whose sum is σ = 26767208. Its totient is φ = 13383600.

The previous prime is 20075359. The next prime is 20075413. The reversal of 20075403 is 30457002.

It is a happy number.

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

It is not a de Polignac number, because 20075403 - 2⁶ = 20075339 is a prime.

It is a super-2 number, since 2×20075403² = 806043611224818, 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 20075403.

It is not an unprimeable number, because it can be changed into a prime (20075413) 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, 3345898 + ... + 3345903.

It is an arithmetic number, because the mean of its divisors is an integer number (6691802).

Almost surely, 2^20075403 is an apocalyptic number.

20075403 is a deficient number, since it is larger than the sum of its proper divisors (6691805).

20075403 is an equidigital number, since it uses as much as digits as its factorization.

20075403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6691804.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 20075403 is about 4480.5583357434. The cubic root of 20075403 is about 271.7824592431.

The spelling of 20075403 in words is "twenty million, seventy-five thousand, four hundred three".