1958256 has 50 divisors (see below), whose sum is σ = 5671512. Its totient is φ = 652320.

The previous prime is 1958249. The next prime is 1958287. The reversal of 1958256 is 6528591.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 1 + 9² + 5 + 8⁶ + 2¹⁴ + 5² + 6⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 1958256.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 541 + ... + 2051.

2^1958256 is an apocalyptic number.

1958256 is a gapful number since it is divisible by the number (16) 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 1958256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2835756).

1958256 is an abundant number, since it is smaller than the sum of its proper divisors (3713256).

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

1958256 is a wasteful number, since it uses less digits than its factorization.

1958256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531 (or 1516 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1958256 is about 1399.3770042415. The cubic root of 1958256 is about 125.1093656187.

The spelling of 1958256 in words is "one million, nine hundred fifty-eight thousand, two hundred fifty-six".