1149728080 has 40 divisors (see below), whose sum is σ = 2706969600. Its totient is φ = 454067328.

The previous prime is 1149728059. The next prime is 1149728123. The reversal of 1149728080 is 808279411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

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 in 7 ways as a sum of consecutive naturals, for example, 84640 + ... + 97279.

It is an arithmetic number, because the mean of its divisors is an integer number (67674240).

Almost surely, 2^1149728080 is an apocalyptic number.

1149728080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1149728080 is an abundant number, since it is smaller than the sum of its proper divisors (1557241520).

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

1149728080 is a wasteful number, since it uses less digits than its factorization.

1149728080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182011 (or 182005 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 1149728080 is about 33907.6404369281. The cubic root of 1149728080 is about 1047.6069705049.

The spelling of 1149728080 in words is "one billion, one hundred forty-nine million, seven hundred twenty-eight thousand, eighty".