2811238 has 8 divisors (see below), whose sum is σ = 4239288. Its totient is φ = 1398144.

The previous prime is 2811229. The next prime is 2811241. The reversal of 2811238 is 8321182.

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

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, 3256 + ... + 4027.

It is an arithmetic number, because the mean of its divisors is an integer number (529911).

2^2811238 is an apocalyptic number.

2811238 is a deficient number, since it is larger than the sum of its proper divisors (1428050).

2811238 is a wasteful number, since it uses less digits than its factorization.

2811238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478.

The product of its digits is 768, while the sum is 25.

The square root of 2811238 is about 1676.6746852028. The cubic root of 2811238 is about 141.1342885074.

Adding to 2811238 its product of digits (768), we get a triangular number (2812006 = T₂₃₇₁).

The spelling of 2811238 in words is "two million, eight hundred eleven thousand, two hundred thirty-eight".