258290740 has 12 divisors (see below), whose sum is σ = 542410596. Its totient is φ = 103316288.

The previous prime is 258290719. The next prime is 258290743. The reversal of 258290740 is 47092852.

258290740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 77334436 + 180956304 = 8794^2 + 13452^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 258290740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258290743) 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, 6457249 + ... + 6457288.

It is an arithmetic number, because the mean of its divisors is an integer number (45200883).

Almost surely, 2^258290740 is an apocalyptic number.

258290740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258290740 is an abundant number, since it is smaller than the sum of its proper divisors (284119856).

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

258290740 is a wasteful number, since it uses less digits than its factorization.

258290740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12914546 (or 12914544 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 258290740 is about 16071.4261968252. The cubic root of 258290740 is about 636.8487179223.

The spelling of 258290740 in words is "two hundred fifty-eight million, two hundred ninety thousand, seven hundred forty".