258066240 has 56 divisors (see below), whose sum is σ = 819363360. Its totient is φ = 68817408.

The previous prime is 258066203. The next prime is 258066247. The reversal of 258066240 is 42660852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258066247) 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 7 ways as a sum of consecutive naturals, for example, 133450 + ... + 135369.

Almost surely, 2^258066240 is an apocalyptic number.

258066240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258066240 is an abundant number, since it is smaller than the sum of its proper divisors (561297120).

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

258066240 is a wasteful number, since it uses less digits than its factorization.

258066240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268839 (or 268829 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 258066240 is about 16064.4402330115. The cubic root of 258066240 is about 636.6641533241.

The spelling of 258066240 in words is "two hundred fifty-eight million, sixty-six thousand, two hundred forty".