7325121728 has 14 divisors (see below), whose sum is σ = 14535788556. Its totient is φ = 3662560832.

The previous prime is 7325121649. The next prime is 7325121751. The reversal of 7325121728 is 8271215237.

It is a junction number, because it is equal to n+sod(n) for n = 7325121691 and 7325121700.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57227450 + ... + 57227577.

Almost surely, 2^7325121728 is an apocalyptic number.

It is an amenable number.

7325121728 is a deficient number, since it is larger than the sum of its proper divisors (7210666828).

7325121728 is a wasteful number, since it uses less digits than its factorization.

7325121728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114455039 (or 114455029 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 7325121728 is about 85586.9249827332. The cubic root of 7325121728 is about 1942.1001212998.

The spelling of 7325121728 in words is "seven billion, three hundred twenty-five million, one hundred twenty-one thousand, seven hundred twenty-eight".