258724 has 12 divisors (see below), whose sum is σ = 459648. Its totient is φ = 127400.

The previous prime is 258721. The next prime is 258733. The reversal of 258724 is 427852.

It is a d-powerful number, because it can be written as 2⁵ + 5⁷ + 7³ + 8⁵ + 2¹⁷ + 4⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 258692 and 258701.

It is not an unprimeable number, because it can be changed into a prime (258721) 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, 172 + ... + 739.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2²⁵⁸⁷²⁴ is an apocalyptic number.

It is an amenable number.

258724 is a deficient number, since it is larger than the sum of its proper divisors (200924).

258724 is a wasteful number, since it uses less digits than its factorization.

258724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its digits is 4480, while the sum is 28.

The square root of 258724 is about 508.6491914866. The cubic root of 258724 is about 63.7204604911.

The spelling of 258724 in words is "two hundred fifty-eight thousand, seven hundred twenty-four".