263428003 has 4 divisors (see below), whose sum is σ = 264359128. Its totient is φ = 262496880.

The previous prime is 263427961. The next prime is 263428007. The reversal of 263428003 is 300824362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263428003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263428007) 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, 465138 + ... + 465703.

It is an arithmetic number, because the mean of its divisors is an integer number (66089782).

Almost surely, 2^263428003 is an apocalyptic number.

263428003 is a deficient number, since it is larger than the sum of its proper divisors (931125).

263428003 is an equidigital number, since it uses as much as digits as its factorization.

263428003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931124.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 263428003 is about 16230.4652736759. The cubic root of 263428003 is about 641.0432229018.

The spelling of 263428003 in words is "two hundred sixty-three million, four hundred twenty-eight thousand, three".