258950440 has 64 divisors (see below), whose sum is σ = 687375360. Its totient is φ = 85916160.

The previous prime is 258950407. The next prime is 258950441. The reversal of 258950440 is 44059852.

It is a self number, because there is not a number n which added to its sum of digits gives 258950440.

It is not an unprimeable number, because it can be changed into a prime (258950441) 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, 6237 + ... + 23596.

It is an arithmetic number, because the mean of its divisors is an integer number (10740240).

Almost surely, 2^258950440 is an apocalyptic number.

258950440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258950440 is an abundant number, since it is smaller than the sum of its proper divisors (428424920).

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

258950440 is a wasteful number, since it uses less digits than its factorization.

258950440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29882 (or 29878 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 258950440 is about 16091.9371114854. The cubic root of 258950440 is about 637.3904484313.

The spelling of 258950440 in words is "two hundred fifty-eight million, nine hundred fifty thousand, four hundred forty".