2872445 has 4 divisors (see below), whose sum is σ = 3446940. Its totient is φ = 2297952.

The previous prime is 2872433. The next prime is 2872451. The reversal of 2872445 is 5442782.

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 948676 + 1923769 = 974^2 + 1387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2872445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287240 + ... + 287249.

It is an arithmetic number, because the mean of its divisors is an integer number (861735).

2^2872445 is an apocalyptic number.

It is an amenable number.

2872445 is a deficient number, since it is larger than the sum of its proper divisors (574495).

2872445 is an equidigital number, since it uses as much as digits as its factorization.

2872445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574494.

The product of its digits is 17920, while the sum is 32.

The square root of 2872445 is about 1694.8288999188. The cubic root of 2872445 is about 142.1512143048.

The spelling of 2872445 in words is "two million, eight hundred seventy-two thousand, four hundred forty-five".