2628139 has 2 divisors, whose sum is σ = 2628140. Its totient is φ = 2628138.

The previous prime is 2628133. The next prime is 2628163. The reversal of 2628139 is 9318262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2628139 - 2⁵ = 2628107 is a prime.

It is a super-2 number, since 2×2628139² = 13814229206642, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 2¹⁹ + 8⁷ + 1 + 3 + 9⁴ .

2628139 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2628139.

It is not a weakly prime, because it can be changed into another prime (2628133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1314069 + 1314070.

It is an arithmetic number, because the mean of its divisors is an integer number (1314070).

2^2628139 is an apocalyptic number.

2628139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2628139 is an equidigital number, since it uses as much as digits as its factorization.

2628139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 2628139 is about 1621.1536016060. The cubic root of 2628139 is about 138.0011727129.

The spelling of 2628139 in words is "two million, six hundred twenty-eight thousand, one hundred thirty-nine".