1155769328 has 20 divisors (see below), whose sum is σ = 2559203760. Its totient is φ = 495329664.

The previous prime is 1155769271. The next prime is 1155769331. The reversal of 1155769328 is 8239675511.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5159573 + ... + 5159796.

It is an arithmetic number, because the mean of its divisors is an integer number (127960188).

Almost surely, 2^1155769328 is an apocalyptic number.

It is an amenable number.

1155769328 is an abundant number, since it is smaller than the sum of its proper divisors (1403434432).

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

1155769328 is a wasteful number, since it uses less digits than its factorization.

1155769328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319384 (or 10319378 counting only the distinct ones).

The product of its digits is 453600, while the sum is 47.

The square root of 1155769328 is about 33996.6075954646. The cubic root of 1155769328 is about 1049.4386502099.

The spelling of 1155769328 in words is "one billion, one hundred fifty-five million, seven hundred sixty-nine thousand, three hundred twenty-eight".