2628818 has 4 divisors (see below), whose sum is σ = 3943230. Its totient is φ = 1314408.

The previous prime is 2628817. The next prime is 2628823. The reversal of 2628818 is 8188262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8188262 = 2 ⋅4094131.

It can be written as a sum of positive squares in only one way, i.e., 1776889 + 851929 = 1333^2 + 923^2 .

It is not an unprimeable number, because it can be changed into a prime (2628811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657203 + ... + 657206.

2^2628818 is an apocalyptic number.

2628818 is a deficient number, since it is larger than the sum of its proper divisors (1314412).

2628818 is a wasteful number, since it uses less digits than its factorization.

2628818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314411.

The product of its digits is 12288, while the sum is 35.

The square root of 2628818 is about 1621.3630068557. The cubic root of 2628818 is about 138.0130562456.

The spelling of 2628818 in words is "two million, six hundred twenty-eight thousand, eight hundred eighteen".