2297729 has 8 divisors (see below), whose sum is σ = 2644800. Its totient is φ = 1955376.

The previous prime is 2297719. The next prime is 2297731. The reversal of 2297729 is 9277922.

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 2297729 - 2⁸ = 2297473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2297692 and 2297701.

It is not an unprimeable number, because it can be changed into a prime (2297719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59 + ... + 2144.

It is an arithmetic number, because the mean of its divisors is an integer number (330600).

2^2297729 is an apocalyptic number.

It is an amenable number.

2297729 is a deficient number, since it is larger than the sum of its proper divisors (347071).

2297729 is a wasteful number, since it uses less digits than its factorization.

2297729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its digits is 31752, while the sum is 38.

The square root of 2297729 is about 1515.8261773700. The cubic root of 2297729 is about 131.9571524537.

The spelling of 2297729 in words is "two million, two hundred ninety-seven thousand, seven hundred twenty-nine".