2628712879 has 4 divisors (see below), whose sum is σ = 2830921576. Its totient is φ = 2426504184.

The previous prime is 2628712861. The next prime is 2628712969. The reversal of 2628712879 is 9782178262.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9782178262 = 2 ⋅4891089131.

It is a de Polignac number, because none of the positive numbers 2^k-2628712879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628712829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101104329 + ... + 101104354.

It is an arithmetic number, because the mean of its divisors is an integer number (707730394).

Almost surely, 2^2628712879 is an apocalyptic number.

2628712879 is a deficient number, since it is larger than the sum of its proper divisors (202208697).

2628712879 is a wasteful number, since it uses less digits than its factorization.

2628712879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202208696.

The product of its digits is 1354752, while the sum is 52.

The square root of 2628712879 is about 51270.9750151097. The cubic root of 2628712879 is about 1380.1121660212.

The spelling of 2628712879 in words is "two billion, six hundred twenty-eight million, seven hundred twelve thousand, eight hundred seventy-nine".