7251280780 has 24 divisors (see below), whose sum is σ = 15235279920. Its totient is φ = 2899066560.

The previous prime is 7251280769. The next prime is 7251280789. The reversal of 7251280780 is 870821527.

It is not an unprimeable number, because it can be changed into a prime (7251280789) 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, 48766 + ... + 129925.

It is an arithmetic number, because the mean of its divisors is an integer number (634803330).

Almost surely, 2^7251280780 is an apocalyptic number.

It is an amenable number.

7251280780 is an abundant number, since it is smaller than the sum of its proper divisors (7983999140).

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

7251280780 is a wasteful number, since it uses less digits than its factorization.

7251280780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180729 (or 180727 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 7251280780 is about 85154.4524966252. The cubic root of 7251280780 is about 1935.5522846695.

The spelling of 7251280780 in words is "seven billion, two hundred fifty-one million, two hundred eighty thousand, seven hundred eighty".