2288739 has 4 divisors (see below), whose sum is σ = 3051656. Its totient is φ = 1525824.

The previous prime is 2288731. The next prime is 2288747. The reversal of 2288739 is 9378822.

2288739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2288731) and next prime (2288747).

It is not a de Polignac number, because 2288739 - 2³ = 2288731 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2¹³ + 8 + 8⁷ + 7⁶ + 3¹⁰ + 9⁴ .

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2288697 and 2288706.

It is not an unprimeable number, because it can be changed into a prime (2288731) 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 3 ways as a sum of consecutive naturals, for example, 381454 + ... + 381459.

It is an arithmetic number, because the mean of its divisors is an integer number (762914).

2^2288739 is an apocalyptic number.

2288739 is a deficient number, since it is larger than the sum of its proper divisors (762917).

2288739 is an equidigital number, since it uses as much as digits as its factorization.

2288739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762916.

The product of its digits is 48384, while the sum is 39.

The square root of 2288739 is about 1512.8578915417. The cubic root of 2288739 is about 131.7848308089.

The spelling of 2288739 in words is "two million, two hundred eighty-eight thousand, seven hundred thirty-nine".