258887380 has 12 divisors (see below), whose sum is σ = 543663540. Its totient is φ = 103554944.

The previous prime is 258887359. The next prime is 258887399. The reversal of 258887380 is 83788852.

It can be written as a sum of positive squares in 2 ways, for example, as 153660816 + 105226564 = 12396^2 + 10258^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6472165 + ... + 6472204.

It is an arithmetic number, because the mean of its divisors is an integer number (45305295).

Almost surely, 2^258887380 is an apocalyptic number.

258887380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258887380 is an abundant number, since it is smaller than the sum of its proper divisors (284776160).

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

258887380 is a wasteful number, since it uses less digits than its factorization.

258887380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12944378 (or 12944376 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 258887380 is about 16089.9776258390. The cubic root of 258887380 is about 637.3387048045.

The spelling of 258887380 in words is "two hundred fifty-eight million, eight hundred eighty-seven thousand, three hundred eighty".