2947256 has 32 divisors (see below), whose sum is σ = 6305040. Its totient is φ = 1279488.

The previous prime is 2947249. The next prime is 2947271. The reversal of 2947256 is 6527492.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935 + ... + 2601.

2^2947256 is an apocalyptic number.

2947256 is a gapful number since it is divisible by the number (26) 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 2947256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3152520).

2947256 is an abundant number, since it is smaller than the sum of its proper divisors (3357784).

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

2947256 is a wasteful number, since it uses less digits than its factorization.

2947256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1699 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 2947256 is about 1716.7574086050. The cubic root of 2947256 is about 143.3747323478.

The spelling of 2947256 in words is "two million, nine hundred forty-seven thousand, two hundred fifty-six".