2872745 has 8 divisors (see below), whose sum is σ = 3650184. Its totient is φ = 2162944.

The previous prime is 2872741. The next prime is 2872757. The reversal of 2872745 is 5472782.

It can be written as a sum of positive squares in 4 ways, for example, as 473344 + 2399401 = 688^2 + 1549^2 .

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

It is not a de Polignac number, because 2872745 - 2² = 2872741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2872741) 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 7 ways as a sum of consecutive naturals, for example, 16814 + ... + 16983.

It is an arithmetic number, because the mean of its divisors is an integer number (456273).

2^2872745 is an apocalyptic number.

It is an amenable number.

2872745 is a deficient number, since it is larger than the sum of its proper divisors (777439).

2872745 is a wasteful number, since it uses less digits than its factorization.

2872745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33819.

The product of its digits is 31360, while the sum is 35.

The square root of 2872745 is about 1694.9174021173. The cubic root of 2872745 is about 142.1561629206.

The spelling of 2872745 in words is "two million, eight hundred seventy-two thousand, seven hundred forty-five".