2391281284 has 12 divisors (see below), whose sum is σ = 4782562624. Its totient is φ = 1024834824.

The previous prime is 2391281237. The next prime is 2391281297. The reversal of 2391281284 is 4821821932.

2391281284 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42701424 + ... + 42701479.

Almost surely, 2^2391281284 is an apocalyptic number.

It is an amenable number.

2391281284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2391281284 is a wasteful number, since it uses less digits than its factorization.

2391281284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85402914 (or 85402912 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 2391281284 is about 48900.7288698236. The cubic root of 2391281284 is about 1337.2426563319.

The spelling of 2391281284 in words is "two billion, three hundred ninety-one million, two hundred eighty-one thousand, two hundred eighty-four".