2567881398 has 16 divisors (see below), whose sum is σ = 5142216240. Its totient is φ = 854884896.

The previous prime is 2567881397. The next prime is 2567881403. The reversal of 2567881398 is 8931887652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2567881397) 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, 263713 + ... + 273276.

It is an arithmetic number, because the mean of its divisors is an integer number (321388515).

Almost surely, 2^2567881398 is an apocalyptic number.

2567881398 is an abundant number, since it is smaller than the sum of its proper divisors (2574334842).

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

2567881398 is a wasteful number, since it uses less digits than its factorization.

2567881398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537791.

The product of its digits is 5806080, while the sum is 57.

The square root of 2567881398 is about 50674.2676118758. The cubic root of 2567881398 is about 1369.3831734033.

The spelling of 2567881398 in words is "two billion, five hundred sixty-seven million, eight hundred eighty-one thousand, three hundred ninety-eight".