1147139224 has 64 divisors (see below), whose sum is σ = 2685830400. Its totient is φ = 446236800.

The previous prime is 1147139219. The next prime is 1147139233. The reversal of 1147139224 is 4229317411.

It is a self number, because there is not a number n which added to its sum of digits gives 1147139224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578667 + ... + 580645.

It is an arithmetic number, because the mean of its divisors is an integer number (41966100).

Almost surely, 2^1147139224 is an apocalyptic number.

1147139224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1147139224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342915200).

1147139224 is an abundant number, since it is smaller than the sum of its proper divisors (1538691176).

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

1147139224 is a wasteful number, since it uses less digits than its factorization.

1147139224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2944 (or 2940 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1147139224 is about 33869.4438100185. The cubic root of 1147139224 is about 1046.8200766837.

The spelling of 1147139224 in words is "one billion, one hundred forty-seven million, one hundred thirty-nine thousand, two hundred twenty-four".