258823842 has 16 divisors (see below), whose sum is σ = 518888160. Its totient is φ = 86067872.

The previous prime is 258823813. The next prime is 258823847. The reversal of 258823842 is 248328852.

It is a junction number, because it is equal to n+sod(n) for n = 258823794 and 258823803.

It is not an unprimeable number, because it can be changed into a prime (258823847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48963 + ... + 53990.

It is an arithmetic number, because the mean of its divisors is an integer number (32430510).

Almost surely, 2^258823842 is an apocalyptic number.

258823842 is an abundant number, since it is smaller than the sum of its proper divisors (260064318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258823842 is a wasteful number, since it uses less digits than its factorization.

258823842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103377.

The product of its digits is 245760, while the sum is 42.

The square root of 258823842 is about 16088.0030457481. The cubic root of 258823842 is about 637.2865604577.

The spelling of 258823842 in words is "two hundred fifty-eight million, eight hundred twenty-three thousand, eight hundred forty-two".