258490 has 8 divisors (see below), whose sum is σ = 465300. Its totient is φ = 103392.

The previous prime is 258487. The next prime is 258491. The reversal of 258490 is 94852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 40401 = 467^2 + 201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (258491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12915 + ... + 12934.

2²⁵⁸⁴⁹⁰ is an apocalyptic number.

258490 is a deficient number, since it is larger than the sum of its proper divisors (206810).

258490 is a wasteful number, since it uses less digits than its factorization.

258490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25856.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 258490 is about 508.4191184446. The cubic root of 258490 is about 63.7012442797.

It can be divided in two parts, 25 and 8490, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 258490 in words is "two hundred fifty-eight thousand, four hundred ninety".