1147103720 has 96 divisors (see below), whose sum is σ = 3160490400. Its totient is φ = 372580992.

The previous prime is 1147103707. The next prime is 1147103731. The reversal of 1147103720 is 273017411.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147103720.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21839 + ... + 52641.

It is an arithmetic number, because the mean of its divisors is an integer number (32921775).

Almost surely, 2^1147103720 is an apocalyptic number.

1147103720 is a gapful number since it is divisible by the number (10) 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 1147103720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1580245200).

1147103720 is an abundant number, since it is smaller than the sum of its proper divisors (2013386680).

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

1147103720 is a wasteful number, since it uses less digits than its factorization.

1147103720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30847 (or 30836 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 1147103720 is about 33868.9196757145. The cubic root of 1147103720 is about 1046.8092768660.

The spelling of 1147103720 in words is "one billion, one hundred forty-seven million, one hundred three thousand, seven hundred twenty".