1147039728 has 40 divisors (see below), whose sum is σ = 3119145600. Its totient is φ = 362222784.

The previous prime is 1147039681. The next prime is 1147039757. The reversal of 1147039728 is 8279307411.

It is a super-2 number, since 2×1147039728² = 2631400275220627968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1147039728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627948 + ... + 629771.

It is an arithmetic number, because the mean of its divisors is an integer number (77978640).

Almost surely, 2^1147039728 is an apocalyptic number.

It is an amenable number.

1147039728 is an abundant number, since it is smaller than the sum of its proper divisors (1972105872).

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

1147039728 is a wasteful number, since it uses less digits than its factorization.

1147039728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257749 (or 1257743 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1147039728 is about 33867.9749616064. The cubic root of 1147039728 is about 1046.7898108364.

The spelling of 1147039728 in words is "one billion, one hundred forty-seven million, thirty-nine thousand, seven hundred twenty-eight".