1258320 has 120 divisors (see below), whose sum is σ = 4580064. Its totient is φ = 284928.

The previous prime is 1258319. The next prime is 1258337. The reversal of 1258320 is 238521.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11707 + ... + 11813.

2^1258320 is an apocalyptic number.

1258320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1258320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2290032).

1258320 is an abundant number, since it is smaller than the sum of its proper divisors (3321744).

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

1258320 is a wasteful number, since it uses less digits than its factorization.

1258320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1258320 is about 1121.7486349446. The cubic root of 1258320 is about 107.9602048171.

The spelling of 1258320 in words is "one million, two hundred fifty-eight thousand, three hundred twenty".