2811398 has 4 divisors (see below), whose sum is σ = 4217100. Its totient is φ = 1405698.

The previous prime is 2811397. The next prime is 2811407. The reversal of 2811398 is 8931182.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2811397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702848 + ... + 702851.

It is an arithmetic number, because the mean of its divisors is an integer number (1054275).

2^2811398 is an apocalyptic number.

2811398 is a deficient number, since it is larger than the sum of its proper divisors (1405702).

2811398 is a wasteful number, since it uses less digits than its factorization.

2811398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405701.

The product of its digits is 3456, while the sum is 32.

The square root of 2811398 is about 1676.7223980135. The cubic root of 2811398 is about 141.1369659824.

The spelling of 2811398 in words is "two million, eight hundred eleven thousand, three hundred ninety-eight".