1155937728 has 112 divisors (see below), whose sum is σ = 3370112640. Its totient is φ = 346752000.

The previous prime is 1155937721. The next prime is 1155937747. The reversal of 1155937728 is 8277395511.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155937721) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 210603 + ... + 216021.

Almost surely, 2^1155937728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155937728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1685056320).

1155937728 is an abundant number, since it is smaller than the sum of its proper divisors (2214174912).

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

1155937728 is a wasteful number, since it uses less digits than its factorization.

1155937728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546 (or 5536 counting only the distinct ones).

The product of its digits is 529200, while the sum is 48.

The square root of 1155937728 is about 33999.0842229611. The cubic root of 1155937728 is about 1049.4896168061.

It can be divided in two parts, 115593 and 7728, that added together give a palindrome (123321).

The spelling of 1155937728 in words is "one billion, one hundred fifty-five million, nine hundred thirty-seven thousand, seven hundred twenty-eight".