258587240 has 64 divisors (see below), whose sum is σ = 593049600. Its totient is φ = 101461248.

The previous prime is 258587239. The next prime is 258587249. The reversal of 258587240 is 42785852.

It is not an unprimeable number, because it can be changed into a prime (258587249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553487 + ... + 553953.

It is an arithmetic number, because the mean of its divisors is an integer number (9266400).

Almost surely, 2^258587240 is an apocalyptic number.

258587240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258587240 is an abundant number, since it is smaller than the sum of its proper divisors (334462360).

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

258587240 is a wasteful number, since it uses less digits than its factorization.

258587240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 258587240 is about 16080.6479968937. The cubic root of 258587240 is about 637.0923109084.

The spelling of 258587240 in words is "two hundred fifty-eight million, five hundred eighty-seven thousand, two hundred forty".