2918816 has 24 divisors (see below), whose sum is σ = 5858244. Its totient is φ = 1431040.

The previous prime is 2918809. The next prime is 2918857. The reversal of 2918816 is 6188192.

It can be written as a sum of positive squares in 2 ways, for example, as 2755600 + 163216 = 1660^2 + 404^2 .

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, 836 + ... + 2556.

2^2918816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2918816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929122).

2918816 is an abundant number, since it is smaller than the sum of its proper divisors (2939428).

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

2918816 is a wasteful number, since it uses less digits than its factorization.

2918816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784 (or 1776 counting only the distinct ones).

The product of its digits is 6912, while the sum is 35.

The square root of 2918816 is about 1708.4542721419. The cubic root of 2918816 is about 142.9120687841.

The spelling of 2918816 in words is "two million, nine hundred eighteen thousand, eight hundred sixteen".