1155285472 has 96 divisors (see below), whose sum is σ = 2563190784. Its totient is φ = 508032000.

The previous prime is 1155285451. The next prime is 1155285479. The reversal of 1155285472 is 2745825511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155285479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921972 + ... + 1922572.

It is an arithmetic number, because the mean of its divisors is an integer number (26699904).

Almost surely, 2^1155285472 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 1155285472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281595392).

1155285472 is an abundant number, since it is smaller than the sum of its proper divisors (1407905312).

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

1155285472 is a wasteful number, since it uses less digits than its factorization.

1155285472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 784 counting only the distinct ones).

The product of its digits is 112000, while the sum is 40.

The square root of 1155285472 is about 33989.4906110698. The cubic root of 1155285472 is about 1049.2921826720.

The spelling of 1155285472 in words is "one billion, one hundred fifty-five million, two hundred eighty-five thousand, four hundred seventy-two".