1147284 has 30 divisors (see below), whose sum is σ = 3000074. Its totient is φ = 382320.

The previous prime is 1147273. The next prime is 1147297. The reversal of 1147284 is 4827411.

It can be written as a sum of positive squares in only one way, i.e., 944784 + 202500 = 972^2 + 450^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1447 + ... + 2094.

2^1147284 is an apocalyptic number.

It is an amenable number.

1147284 is an abundant number, since it is smaller than the sum of its proper divisors (1852790).

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

1147284 is a wasteful number, since it uses less digits than its factorization.

1147284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3557 (or 3546 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 1147284 is about 1071.1134393705. The cubic root of 1147284 is about 104.6864113201.

It can be divided in two parts, 1147 and 284, that added together give a triangular number (1431 = T₅₃).

The spelling of 1147284 in words is "one million, one hundred forty-seven thousand, two hundred eighty-four".