2872813 has 8 divisors (see below), whose sum is σ = 3056832. Its totient is φ = 2690496.

The previous prime is 2872811. The next prime is 2872817. The reversal of 2872813 is 3182782.

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

It is a cyclic number.

It is not a de Polignac number, because 2872813 - 2¹ = 2872811 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2872811) 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, 5656 + ... + 6142.

It is an arithmetic number, because the mean of its divisors is an integer number (382104).

2^2872813 is an apocalyptic number.

It is an amenable number.

2872813 is a deficient number, since it is larger than the sum of its proper divisors (184019).

2872813 is a wasteful number, since it uses less digits than its factorization.

2872813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851.

The product of its digits is 5376, while the sum is 31.

The square root of 2872813 is about 1694.9374619732. The cubic root of 2872813 is about 142.1572845589.

Subtracting from 2872813 its sum of digits (31), we obtain a palindrome (2872782).

The spelling of 2872813 in words is "two million, eight hundred seventy-two thousand, eight hundred thirteen".