3256403 has 4 divisors (see below), whose sum is σ = 3260208. Its totient is φ = 3252600.

The previous prime is 3256399. The next prime is 3256411. The reversal of 3256403 is 3046523.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3046523 = 61 ⋅49943.

It is a cyclic number.

It is not a de Polignac number, because 3256403 - 2² = 3256399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3256423) 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, 50 + ... + 2552.

It is an arithmetic number, because the mean of its divisors is an integer number (815052).

Almost surely, 2^3256403 is an apocalyptic number.

3256403 is a deficient number, since it is larger than the sum of its proper divisors (3805).

3256403 is a wasteful number, since it uses less digits than its factorization.

3256403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 3256403 is about 1804.5506365852. The cubic root of 3256403 is about 148.2220158242. Note that the first 3 decimals are identical.

The spelling of 3256403 in words is "three million, two hundred fifty-six thousand, four hundred three".