2628726287 has 16 divisors (see below), whose sum is σ = 2908276224. Its totient is φ = 2356128000.

The previous prime is 2628726259. The next prime is 2628726301. The reversal of 2628726287 is 7826278262.

It is a cyclic number.

It is not a de Polignac number, because 2628726287 - 2¹⁴ = 2628709903 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 (2628723287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284612 + ... + 293702.

It is an arithmetic number, because the mean of its divisors is an integer number (181767264).

Almost surely, 2^2628726287 is an apocalyptic number.

2628726287 is a deficient number, since it is larger than the sum of its proper divisors (279549937).

2628726287 is a wasteful number, since it uses less digits than its factorization.

2628726287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470.

The product of its digits is 1806336, while the sum is 50.

The square root of 2628726287 is about 51271.1057711846. The cubic root of 2628726287 is about 1380.1145124817.

The spelling of 2628726287 in words is "two billion, six hundred twenty-eight million, seven hundred twenty-six thousand, two hundred eighty-seven".