7968487400 has 24 divisors (see below), whose sum is σ = 18526733670. Its totient is φ = 3187394880.

The previous prime is 7968487393. The next prime is 7968487421. The reversal of 7968487400 is 47848697.

It can be written as a sum of positive squares in 3 ways, for example, as 7331126884 + 637360516 = 85622^2 + 25246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19921019 + ... + 19921418.

Almost surely, 2^7968487400 is an apocalyptic number.

It is an amenable number.

7968487400 is an abundant number, since it is smaller than the sum of its proper divisors (10558246270).

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

7968487400 is a wasteful number, since it uses less digits than its factorization.

7968487400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39842453 (or 39842444 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 7968487400 is about 89266.3844904676. The cubic root of 7968487400 is about 1997.3704943652.

The spelling of 7968487400 in words is "seven billion, nine hundred sixty-eight million, four hundred eighty-seven thousand, four hundred".