258221380 has 24 divisors (see below), whose sum is σ = 543029760. Its totient is φ = 103142880.

The previous prime is 258221377. The next prime is 258221393. The reversal of 258221380 is 83122852.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6045 + ... + 23515.

It is an arithmetic number, because the mean of its divisors is an integer number (22626240).

Almost surely, 2^258221380 is an apocalyptic number.

258221380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258221380 is an abundant number, since it is smaller than the sum of its proper divisors (284808380).

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

258221380 is a wasteful number, since it uses less digits than its factorization.

258221380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18219 (or 18217 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 258221380 is about 16069.2681849548. The cubic root of 258221380 is about 636.7917075141.

The spelling of 258221380 in words is "two hundred fifty-eight million, two hundred twenty-one thousand, three hundred eighty".