258297930 has 64 divisors (see below), whose sum is σ = 751420800. Its totient is φ = 62616960.

The previous prime is 258297911. The next prime is 258297937. The reversal of 258297930 is 39792852.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (258297937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40515 + ... + 46454.

It is an arithmetic number, because the mean of its divisors is an integer number (11740950).

Almost surely, 2^258297930 is an apocalyptic number.

258297930 is an abundant number, since it is smaller than the sum of its proper divisors (493122870).

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

258297930 is a wasteful number, since it uses less digits than its factorization.

258297930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86996 (or 86990 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 258297930 is about 16071.6498841905. The cubic root of 258297930 is about 636.8546271544.

The spelling of 258297930 in words is "two hundred fifty-eight million, two hundred ninety-seven thousand, nine hundred thirty".