1255830 has 32 divisors (see below), whose sum is σ = 3090528. Its totient is φ = 326400.

The previous prime is 1255829. The next prime is 1255831. The reversal of 1255830 is 385521.

1255830 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (1255829) and next prime (1255831).

It is a self number, because there is not a number n which added to its sum of digits gives 1255830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 720 + ... + 1740.

It is an arithmetic number, because the mean of its divisors is an integer number (96579).

2^1255830 is an apocalyptic number.

1255830 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 1255830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1545264).

1255830 is an abundant number, since it is smaller than the sum of its proper divisors (1834698).

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

1255830 is a wasteful number, since it uses less digits than its factorization.

1255830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

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

The square root of 1255830 is about 1120.6382110208. The cubic root of 1255830 is about 107.8889462018. Note that the first 3 decimals are identical.

The spelling of 1255830 in words is "one million, two hundred fifty-five thousand, eight hundred thirty".