2722385 has 4 divisors (see below), whose sum is σ = 3266868. Its totient is φ = 2177904.

The previous prime is 2722367. The next prime is 2722387. The reversal of 2722385 is 5832272.

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

It can be written as a sum of positive squares in 2 ways, for example, as 625681 + 2096704 = 791^2 + 1448^2 .

It is a cyclic number.

It is not a de Polignac number, because 2722385 - 2²⁰ = 1673809 is a prime.

It is a super-2 number, since 2×2722385² = 14822760176450, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 7³ + 2¹⁶ + 2²¹ + 3¹² + 8⁴ + 5⁶ .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2722387) 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, 272234 + ... + 272243.

It is an arithmetic number, because the mean of its divisors is an integer number (816717).

2^2722385 is an apocalyptic number.

It is an amenable number.

2722385 is a deficient number, since it is larger than the sum of its proper divisors (544483).

2722385 is an equidigital number, since it uses as much as digits as its factorization.

2722385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544482.

The product of its digits is 6720, while the sum is 29.

The square root of 2722385 is about 1649.9651511471. The cubic root of 2722385 is about 139.6314284896.

The spelling of 2722385 in words is "two million, seven hundred twenty-two thousand, three hundred eighty-five".