1147192728 has 32 divisors (see below), whose sum is σ = 3128708160. Its totient is φ = 347634080.

The previous prime is 1147192721. The next prime is 1147192729. The reversal of 1147192728 is 8272917411.

It is a self number, because there is not a number n which added to its sum of digits gives 1147192728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147192721) 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 7 ways as a sum of consecutive naturals, for example, 2172450 + ... + 2172977.

It is an arithmetic number, because the mean of its divisors is an integer number (97772130).

Almost surely, 2^1147192728 is an apocalyptic number.

It is an amenable number.

1147192728 is an abundant number, since it is smaller than the sum of its proper divisors (1981515432).

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

1147192728 is a wasteful number, since it uses less digits than its factorization.

1147192728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345447 (or 4345443 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 1147192728 is about 33870.2336572986. The cubic root of 1147192728 is about 1046.8363514274.

The spelling of 1147192728 in words is "one billion, one hundred forty-seven million, one hundred ninety-two thousand, seven hundred twenty-eight".