2472805 has 4 divisors (see below), whose sum is σ = 2967372. Its totient is φ = 1978240.

The previous prime is 2472797. The next prime is 2472809. The reversal of 2472805 is 5082742.

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 1110916 + 1361889 = 1054^2 + 1167^2 .

It is not a de Polignac number, because 2472805 - 2³ = 2472797 is a prime.

It is a super-2 number, since 2×2472805² = 12229529136050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247276 + ... + 247285.

It is an arithmetic number, because the mean of its divisors is an integer number (741843).

2^2472805 is an apocalyptic number.

It is an amenable number.

2472805 is a deficient number, since it is larger than the sum of its proper divisors (494567).

2472805 is an equidigital number, since it uses as much as digits as its factorization.

2472805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494566.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 2472805 is about 1572.5155007185. The cubic root of 2472805 is about 135.2269616117.

The spelling of 2472805 in words is "two million, four hundred seventy-two thousand, eight hundred five".