1147727440 has 40 divisors (see below), whose sum is σ = 2692102248. Its totient is φ = 455024640.

The previous prime is 1147727437. The next prime is 1147727507. The reversal of 1147727440 is 447277411.

It can be written as a sum of positive squares in 4 ways, for example, as 132158016 + 1015569424 = 11496^2 + 31868^2 .

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

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1147727440.

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, 54441 + ... + 72520.

Almost surely, 2^1147727440 is an apocalyptic number.

1147727440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1147727440 is an abundant number, since it is smaller than the sum of its proper divisors (1544374808).

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

1147727440 is a wasteful number, since it uses less digits than its factorization.

1147727440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127087 (or 127081 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 1147727440 is about 33878.1262764044. The cubic root of 1147727440 is about 1046.9989713022.

The spelling of 1147727440 in words is "one billion, one hundred forty-seven million, seven hundred twenty-seven thousand, four hundred forty".