258628403 has 4 divisors (see below), whose sum is σ = 282140088. Its totient is φ = 235116720.

The previous prime is 258628387. The next prime is 258628417. The reversal of 258628403 is 304826852.

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

It is a cyclic number.

It is not a de Polignac number, because 258628403 - 2⁴ = 258628387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258628493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11755826 + ... + 11755847.

It is an arithmetic number, because the mean of its divisors is an integer number (70535022).

Almost surely, 2^258628403 is an apocalyptic number.

258628403 is a deficient number, since it is larger than the sum of its proper divisors (23511685).

258628403 is a wasteful number, since it uses less digits than its factorization.

258628403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23511684.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 258628403 is about 16081.9278384154. The cubic root of 258628403 is about 637.1261141224.

The spelling of 258628403 in words is "two hundred fifty-eight million, six hundred twenty-eight thousand, four hundred three".