258568394 has 24 divisors (see below), whose sum is σ = 452065860. Its totient is φ = 110596416.

The previous prime is 258568393. The next prime is 258568421. The reversal of 258568394 is 493865852.

It can be written as a sum of positive squares in 2 ways, for example, as 233937025 + 24631369 = 15295^2 + 4963^2 .

It is a super-2 number, since 2×258568394² = 133715228751478472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258568391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53444 + ... + 58080.

Almost surely, 2^258568394 is an apocalyptic number.

258568394 is a deficient number, since it is larger than the sum of its proper divisors (193497466).

258568394 is a wasteful number, since it uses less digits than its factorization.

258568394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222 (or 5215 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 50.

The square root of 258568394 is about 16080.0620023680. The cubic root of 258568394 is about 637.0768333035.

The spelling of 258568394 in words is "two hundred fifty-eight million, five hundred sixty-eight thousand, three hundred ninety-four".