7400734066728 has 24 divisors (see below), whose sum is σ = 20043654764250. Its totient is φ = 2466911355552.

The previous prime is 7400734066669. The next prime is 7400734066741. The reversal of 7400734066728 is 8276604370047.

7400734066728 is a `hidden beast` number, since 7 + 400 + 73 + 40 + 66 + 72 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5598798327684 + 1801935739044 = 2366178^2 + 1342362^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×7400734066728³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 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, 51393986503 + ... + 51393986646.

Almost surely, 2^{7400734066728} is an apocalyptic number.

It is an amenable number.

7400734066728 is an abundant number, since it is smaller than the sum of its proper divisors (12642920697522).

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

7400734066728 is a wasteful number, since it uses less digits than its factorization.

7400734066728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102787973161 (or 102787973154 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 54.

The spelling of 7400734066728 in words is "seven trillion, four hundred billion, seven hundred thirty-four million, sixty-six thousand, seven hundred twenty-eight".