1004256 has 72 divisors (see below), whose sum is σ = 3125304. Its totient is φ = 303360.

The previous prime is 1004233. The next prime is 1004273. The reversal of 1004256 is 6524001.

It is a happy number.

1004256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1004256² = 2017060227072, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3010 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (43407).

2^1004256 is an apocalyptic number.

1004256 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 1004256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1562652).

1004256 is an abundant number, since it is smaller than the sum of its proper divisors (2121048).

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

1004256 is a wasteful number, since it uses less digits than its factorization.

1004256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 333 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1004256 is about 1002.1257406134. The cubic root of 1004256 is about 100.1416658797.

Adding to 1004256 its reverse (6524001), we get a palindrome (7528257).

It can be divided in two parts, 100 and 4256, that added together give a square (4356 = 66²).

The spelling of 1004256 in words is "one million, four thousand, two hundred fifty-six".