258294728 has 16 divisors (see below), whose sum is σ = 499925760. Its totient is φ = 124981200.

The previous prime is 258294727. The next prime is 258294737. The reversal of 258294728 is 827492852.

258294728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (258294727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520508 + ... + 521003.

It is an arithmetic number, because the mean of its divisors is an integer number (31245360).

Almost surely, 2^258294728 is an apocalyptic number.

It is an amenable number.

258294728 is a deficient number, since it is larger than the sum of its proper divisors (241631032).

258294728 is a wasteful number, since it uses less digits than its factorization.

258294728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041548 (or 1041544 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 258294728 is about 16071.5502674758. The cubic root of 258294728 is about 636.8519955461.

The spelling of 258294728 in words is "two hundred fifty-eight million, two hundred ninety-four thousand, seven hundred twenty-eight".