2309056 has 28 divisors (see below), whose sum is σ = 4638040. Its totient is φ = 1140480.

The previous prime is 2309029. The next prime is 2309077. The reversal of 2309056 is 6509032.

It is a super-2 number, since 2×2309056² = 10663479222272, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2309056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6811 + ... + 7141.

2^2309056 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 2309056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319020).

2309056 is an abundant number, since it is smaller than the sum of its proper divisors (2328984).

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

2309056 is a wasteful number, since it uses less digits than its factorization.

2309056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 2309056 is about 1519.5578304230. The cubic root of 2309056 is about 132.1736313174.

The spelling of 2309056 in words is "two million, three hundred nine thousand, fifty-six".