1258530 has 64 divisors (see below), whose sum is σ = 3725568. Its totient is φ = 264960.

The previous prime is 1258511. The next prime is 1258531. The reversal of 1258530 is 358521.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1258530.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2500 + ... + 2960.

It is an arithmetic number, because the mean of its divisors is an integer number (58212).

2^1258530 is an apocalyptic number.

1258530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1258530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862784).

1258530 is an abundant number, since it is smaller than the sum of its proper divisors (2467038).

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

1258530 is a wasteful number, since it uses less digits than its factorization.

1258530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1258530 is about 1121.8422348976. The cubic root of 1258530 is about 107.9662102799.

Subtracting from 1258530 its reverse (358521), we obtain a palindrome (900009).

The spelling of 1258530 in words is "one million, two hundred fifty-eight thousand, five hundred thirty".