2628939 has 8 divisors (see below), whose sum is σ = 3521232. Its totient is φ = 1744640.

The previous prime is 2628919. The next prime is 2628953. The reversal of 2628939 is 9398262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2628939 - 2⁷ = 2628811 is a prime.

It is a super-2 number, since 2×2628939² = 13822640531442, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 6³ + 2²¹ + 8 + 9 + 3¹² + 9² .

2628939 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2628897 and 2628906.

It is not an unprimeable number, because it can be changed into a prime (2628919) 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, 1182 + ... + 2579.

It is an arithmetic number, because the mean of its divisors is an integer number (440154).

2^2628939 is an apocalyptic number.

2628939 is a deficient number, since it is larger than the sum of its proper divisors (892293).

2628939 is a wasteful number, since it uses less digits than its factorization.

2628939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its digits is 46656, while the sum is 39.

The square root of 2628939 is about 1621.4003207105. The cubic root of 2628939 is about 138.0151737148.

The spelling of 2628939 in words is "two million, six hundred twenty-eight thousand, nine hundred thirty-nine".