3120256 has 32 divisors (see below), whose sum is σ = 6548400. Its totient is φ = 1476864.

The previous prime is 3120253. The next prime is 3120277. The reversal of 3120256 is 6520213.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (3120253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1791 + ... + 3073.

Almost surely, 2^3120256 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 3120256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3274200).

3120256 is an abundant number, since it is smaller than the sum of its proper divisors (3428144).

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

3120256 is a wasteful number, since it uses less digits than its factorization.

3120256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 3120256 is about 1766.4246375093. The cubic root of 3120256 is about 146.1268678949.

Adding to 3120256 its reverse (6520213), we get a palindrome (9640469).

The spelling of 3120256 in words is "three million, one hundred twenty thousand, two hundred fifty-six".