2789256 has 64 divisors (see below), whose sum is σ = 7557120. Its totient is φ = 855360.

The previous prime is 2789251. The next prime is 2789263. The reversal of 2789256 is 6529872.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 17193.

It is an arithmetic number, because the mean of its divisors is an integer number (118080).

2^2789256 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 2789256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3778560).

2789256 is an abundant number, since it is smaller than the sum of its proper divisors (4767864).

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

2789256 is a wasteful number, since it uses less digits than its factorization.

2789256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 222 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 2789256 is about 1670.1065834251. The cubic root of 2789256 is about 140.7654669528.

The spelling of 2789256 in words is "two million, seven hundred eighty-nine thousand, two hundred fifty-six".