7728100840 has 32 divisors (see below), whose sum is σ = 17682948000. Its totient is φ = 3038845504.

The previous prime is 7728100823. The next prime is 7728100841. The reversal of 7728100840 is 480018277.

It is a self number, because there is not a number n which added to its sum of digits gives 7728100840.

It is not an unprimeable number, because it can be changed into a prime (7728100841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634950 + ... + 1639669.

It is an arithmetic number, because the mean of its divisors is an integer number (552592125).

Almost surely, 2^7728100840 is an apocalyptic number.

It is an amenable number.

7728100840 is an abundant number, since it is smaller than the sum of its proper divisors (9954847160).

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

7728100840 is a wasteful number, since it uses less digits than its factorization.

7728100840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274689 (or 3274685 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 7728100840 is about 87909.6174488321. The cubic root of 7728100840 is about 1977.0800786320.

The spelling of 7728100840 in words is "seven billion, seven hundred twenty-eight million, one hundred thousand, eight hundred forty".