2288709 has 32 divisors (see below), whose sum is σ = 3648000. Its totient is φ = 1415232.

The previous prime is 2288687. The next prime is 2288711. The reversal of 2288709 is 9078822.

It is not a de Polignac number, because 2288709 - 2⁵ = 2288677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2288719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28932 + ... + 29010.

It is an arithmetic number, because the mean of its divisors is an integer number (114000).

2^2288709 is an apocalyptic number.

2288709 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2288709 is a deficient number, since it is larger than the sum of its proper divisors (1359291).

2288709 is a wasteful number, since it uses less digits than its factorization.

2288709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2288709 is about 1512.8479765000. The cubic root of 2288709 is about 131.7842550097.

The spelling of 2288709 in words is "two million, two hundred eighty-eight thousand, seven hundred nine".