1099740728 has 8 divisors (see below), whose sum is σ = 2062013880. Its totient is φ = 549870360.

The previous prime is 1099740709. The next prime is 1099740743. The reversal of 1099740728 is 8270479901.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68733788 + ... + 68733803.

It is an arithmetic number, because the mean of its divisors is an integer number (257751735).

Almost surely, 2^1099740728 is an apocalyptic number.

It is an amenable number.

1099740728 is a deficient number, since it is larger than the sum of its proper divisors (962273152).

1099740728 is a wasteful number, since it uses less digits than its factorization.

1099740728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137467597 (or 137467593 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 1099740728 is about 33162.3390007400. The cubic root of 1099740728 is about 1032.1990056501.

The spelling of 1099740728 in words is "one billion, ninety-nine million, seven hundred forty thousand, seven hundred twenty-eight".