2628406 has 16 divisors (see below), whose sum is σ = 4418640. Its totient is φ = 1162080.

The previous prime is 2628401. The next prime is 2628407. The reversal of 2628406 is 6048262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801 + ... + 2428.

It is an arithmetic number, because the mean of its divisors is an integer number (276165).

2^2628406 is an apocalyptic number.

2628406 is a deficient number, since it is larger than the sum of its proper divisors (1790234).

2628406 is a wasteful number, since it uses less digits than its factorization.

2628406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2628406 is about 1621.2359482814. The cubic root of 2628406 is about 138.0058458631.

It can be divided in two parts, 262 and 8406, that added together give a palindrome (8668).

The spelling of 2628406 in words is "two million, six hundred twenty-eight thousand, four hundred six".