1155345428 has 6 divisors (see below), whose sum is σ = 2021854506. Its totient is φ = 577672712.

The previous prime is 1155345403. The next prime is 1155345431. The reversal of 1155345428 is 8245435511.

It can be written as a sum of positive squares in only one way, i.e., 644042884 + 511302544 = 25378^2 + 22612^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1155345391 and 1155345400.

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, 144418175 + ... + 144418182.

It is an arithmetic number, because the mean of its divisors is an integer number (336975751).

Almost surely, 2^1155345428 is an apocalyptic number.

It is an amenable number.

1155345428 is a deficient number, since it is larger than the sum of its proper divisors (866509078).

1155345428 is a wasteful number, since it uses less digits than its factorization.

1155345428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288836361 (or 288836359 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The square root of 1155345428 is about 33990.3725781286. The cubic root of 1155345428 is about 1049.3103341089.

The spelling of 1155345428 in words is "one billion, one hundred fifty-five million, three hundred forty-five thousand, four hundred twenty-eight".