2765289 has 8 divisors (see below), whose sum is σ = 3706560. Its totient is φ = 1833776.

The previous prime is 2765281. The next prime is 2765297. The reversal of 2765289 is 9825672.

It is a happy number.

2765289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2765281) and next prime (2765297).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2765289 - 2³ = 2765281 is a prime.

It is a d-powerful number, because it can be written as 2¹⁰ + 7 + 6⁵ + 5⁸ + 2²¹ + 8⁶ + 9⁴ .

2765289 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2765281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (463320).

2^2765289 is an apocalyptic number.

It is an amenable number.

2765289 is a deficient number, since it is larger than the sum of its proper divisors (941271).

2765289 is a wasteful number, since it uses less digits than its factorization.

2765289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879.

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

The square root of 2765289 is about 1662.9158126616. The cubic root of 2765289 is about 140.3611255105.

It can be divided in two parts, 276 and 5289, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 2765289 in words is "two million, seven hundred sixty-five thousand, two hundred eighty-nine".