2891106 has 32 divisors (see below), whose sum is σ = 6602880. Its totient is φ = 937008.

The previous prime is 2891101. The next prime is 2891129. The reversal of 2891106 is 6011982.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2891106.

It is not an unprimeable number, because it can be changed into a prime (2891101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275 + ... + 2721.

It is an arithmetic number, because the mean of its divisors is an integer number (206340).

2^2891106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3301440).

2891106 is an abundant number, since it is smaller than the sum of its proper divisors (3711774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2891106 is a wasteful number, since it uses less digits than its factorization.

2891106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 2891106 is about 1700.3252630012. The cubic root of 2891106 is about 142.4583811977.

The spelling of 2891106 in words is "two million, eight hundred ninety-one thousand, one hundred six".