2666628 has 24 divisors (see below), whose sum is σ = 6913760. Its totient is φ = 888840.

The previous prime is 2666591. The next prime is 2666633. The reversal of 2666628 is 8266662.

It is a super-2 number, since 2×2666628² = 14221809780768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2666592 and 2666601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12238 + ... + 12453.

2^2666628 is an apocalyptic number.

It is an amenable number.

2666628 is an abundant number, since it is smaller than the sum of its proper divisors (4247132).

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

2666628 is a wasteful number, since it uses less digits than its factorization.

2666628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24704 (or 24696 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 2666628 is about 1632.9813226121. The cubic root of 2666628 is about 138.6715846177.

The spelling of 2666628 in words is "two million, six hundred sixty-six thousand, six hundred twenty-eight".