2323729 has 4 divisors (see below), whose sum is σ = 2398720. Its totient is φ = 2248740.

The previous prime is 2323721. The next prime is 2323733. The reversal of 2323729 is 9273232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2323729 - 2³ = 2323721 is a prime.

It is a Duffinian number.

2323729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2323697 and 2323706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2323721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37449 + ... + 37510.

It is an arithmetic number, because the mean of its divisors is an integer number (599680).

2^2323729 is an apocalyptic number.

It is an amenable number.

2323729 is a deficient number, since it is larger than the sum of its proper divisors (74991).

2323729 is an equidigital number, since it uses as much as digits as its factorization.

2323729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74990.

The product of its digits is 4536, while the sum is 28.

The square root of 2323729 is about 1524.3782339039. The cubic root of 2323729 is about 132.4530081373.

The spelling of 2323729 in words is "two million, three hundred twenty-three thousand, seven hundred twenty-nine".