7987464280 has 64 divisors (see below), whose sum is σ = 19071339840. Its totient is φ = 3000348672.

The previous prime is 7987464259. The next prime is 7987464299. The reversal of 7987464280 is 824647897.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297909 + ... + 323611.

It is an arithmetic number, because the mean of its divisors is an integer number (297989685).

Almost surely, 2^7987464280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7987464280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9535669920).

7987464280 is an abundant number, since it is smaller than the sum of its proper divisors (11083875560).

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

7987464280 is a wasteful number, since it uses less digits than its factorization.

7987464280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26188 (or 26184 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 55.

The square root of 7987464280 is about 89372.6148213198. The cubic root of 7987464280 is about 1998.9548105513.

The spelling of 7987464280 in words is "seven billion, nine hundred eighty-seven million, four hundred sixty-four thousand, two hundred eighty".