1124279728 has 160 divisors (see below), whose sum is σ = 2683828224. Its totient is φ = 453024000.

The previous prime is 1124279719. The next prime is 1124279729. The reversal of 1124279728 is 8279724211.

It is not an unprimeable number, because it can be changed into a prime (1124279729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8582223 + ... + 8582353.

Almost surely, 2^1124279728 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 1124279728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341914112).

1124279728 is an abundant number, since it is smaller than the sum of its proper divisors (1559548496).

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

1124279728 is a wasteful number, since it uses less digits than its factorization.

1124279728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 188 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 1124279728 is about 33530.2807623199. The cubic root of 1124279728 is about 1039.8199047124.

The spelling of 1124279728 in words is "one billion, one hundred twenty-four million, two hundred seventy-nine thousand, seven hundred twenty-eight".