1258432 has 42 divisors (see below), whose sum is σ = 2908808. Its totient is φ = 529152.

The previous prime is 1258429. The next prime is 1258441. The reversal of 1258432 is 2348521.

It is a junction number, because it is equal to n+sod(n) for n = 1258397 and 1258406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23718 + ... + 23770.

2^1258432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1258432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454404).

1258432 is an abundant number, since it is smaller than the sum of its proper divisors (1650376).

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

1258432 is an frugal number, since it uses more digits than its factorization.

1258432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 62 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 1258432 is about 1121.7985558914. The cubic root of 1258432 is about 107.9634078137.

The spelling of 1258432 in words is "one million, two hundred fifty-eight thousand, four hundred thirty-two".