258752540 has 24 divisors (see below), whose sum is σ = 543816672. Its totient is φ = 103417920.

The previous prime is 258752539. The next prime is 258752561. The reversal of 258752540 is 45257852.

It is a junction number, because it is equal to n+sod(n) for n = 258752494 and 258752503.

It is a congruent number.

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, 24470 + ... + 33410.

It is an arithmetic number, because the mean of its divisors is an integer number (22659028).

Almost surely, 2^258752540 is an apocalyptic number.

258752540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

258752540 is an abundant number, since it is smaller than the sum of its proper divisors (285064132).

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

258752540 is a wasteful number, since it uses less digits than its factorization.

258752540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10397 (or 10395 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 258752540 is about 16085.7868940254. The cubic root of 258752540 is about 637.2280341910.

The spelling of 258752540 in words is "two hundred fifty-eight million, seven hundred fifty-two thousand, five hundred forty".