258840246 has 24 divisors (see below), whose sum is σ = 602200440. Its totient is φ = 73954272.

The previous prime is 258840221. The next prime is 258840259. The reversal of 258840246 is 642048852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439911 + ... + 440498.

It is an arithmetic number, because the mean of its divisors is an integer number (25091685).

Almost surely, 2^258840246 is an apocalyptic number.

258840246 is an abundant number, since it is smaller than the sum of its proper divisors (343360194).

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

258840246 is a wasteful number, since it uses less digits than its factorization.

258840246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880428 (or 880421 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 258840246 is about 16088.5128585584. The cubic root of 258840246 is about 637.3000237046.

The spelling of 258840246 in words is "two hundred fifty-eight million, eight hundred forty thousand, two hundred forty-six".