2026403 has 4 divisors (see below), whose sum is σ = 2030088. Its totient is φ = 2022720.

The previous prime is 2026397. The next prime is 2026447. The reversal of 2026403 is 3046202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3046202 = 2 ⋅1523101.

It is a cyclic number.

It is not a de Polignac number, because 2026403 - 2¹⁶ = 1960867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2026463) 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, 833 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (507522).

2^2026403 is an apocalyptic number.

2026403 is a deficient number, since it is larger than the sum of its proper divisors (3685).

2026403 is an equidigital number, since it uses as much as digits as its factorization.

2026403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2026403 is about 1423.5178256699. The cubic root of 2026403 is about 126.5441112236.

The spelling of 2026403 in words is "two million, twenty-six thousand, four hundred three".