2272309 has 8 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 2052336.

The previous prime is 2272301. The next prime is 2272313. The reversal of 2272309 is 9032722.

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

It is not a de Polignac number, because 2272309 - 2³ = 2272301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2272301) 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, 1249 + ... + 2470.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

2^2272309 is an apocalyptic number.

It is an amenable number.

2272309 is a deficient number, since it is larger than the sum of its proper divisors (227531).

2272309 is a wasteful number, since it uses less digits than its factorization.

2272309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2272309 is about 1507.4179911358. The cubic root of 2272309 is about 131.4687285585.

The spelling of 2272309 in words is "two million, two hundred seventy-two thousand, three hundred nine".