2581281088 has 28 divisors (see below), whose sum is σ = 5423539572. Its totient is φ = 1214720000.

The previous prime is 2581281049. The next prime is 2581281103. The reversal of 2581281088 is 8801821852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1515389184 + 1065891904 = 38928^2 + 32648^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185163 + ... + 1187338.

Almost surely, 2^2581281088 is an apocalyptic number.

It is an amenable number.

2581281088 is an abundant number, since it is smaller than the sum of its proper divisors (2842258484).

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

2581281088 is a wasteful number, since it uses less digits than its factorization.

2581281088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372530 (or 2372520 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 43.

The square root of 2581281088 is about 50806.3095294275. The cubic root of 2581281088 is about 1371.7609422927.

The spelling of 2581281088 in words is "two billion, five hundred eighty-one million, two hundred eighty-one thousand, eighty-eight".