258246728 has 16 divisors (see below), whose sum is σ = 512695980. Its totient is φ = 121527808.

The previous prime is 258246673. The next prime is 258246757. The reversal of 258246728 is 827642852.

It can be written as a sum of positive squares in 2 ways, for example, as 252873604 + 5373124 = 15902^2 + 2318^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 949301 + ... + 949572.

Almost surely, 2^258246728 is an apocalyptic number.

It is an amenable number.

258246728 is a deficient number, since it is larger than the sum of its proper divisors (254449252).

258246728 is a wasteful number, since it uses less digits than its factorization.

258246728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898896 (or 1898892 counting only the distinct ones).

The product of its digits is 430080, while the sum is 44.

The square root of 258246728 is about 16070.0568760661. The cubic root of 258246728 is about 636.8125434703.

The spelling of 258246728 in words is "two hundred fifty-eight million, two hundred forty-six thousand, seven hundred twenty-eight".