3147256 has 32 divisors (see below), whose sum is σ = 6906240. Its totient is φ = 1316448.

The previous prime is 3147253. The next prime is 3147259. The reversal of 3147256 is 6527413.

It is an interprime number because it is at equal distance from previous prime (3147253) and next prime (3147259).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3147253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1755 + ... + 3061.

It is an arithmetic number, because the mean of its divisors is an integer number (215820).

Almost surely, 2^3147256 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 3147256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3453120).

3147256 is an abundant number, since it is smaller than the sum of its proper divisors (3758984).

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

3147256 is a wasteful number, since it uses less digits than its factorization.

3147256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1359 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 3147256 is about 1774.0507320818. The cubic root of 3147256 is about 146.5471432106.

It can be divided in two parts, 3147 and 256, that added together give a triangular number (3403 = T₈₂).

The spelling of 3147256 in words is "three million, one hundred forty-seven thousand, two hundred fifty-six".