1147996560 has 80 divisors (see below), whose sum is σ = 3581574336. Its totient is φ = 304172544.

The previous prime is 1147996547. The next prime is 1147996579. The reversal of 1147996560 is 656997411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1147996560² = 2635792203543667200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22447 + ... + 52913.

Almost surely, 2^1147996560 is an apocalyptic number.

1147996560 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 1147996560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790787168).

1147996560 is an abundant number, since it is smaller than the sum of its proper divisors (2433577776).

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

1147996560 is a wasteful number, since it uses less digits than its factorization.

1147996560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30640 (or 30634 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 1147996560 is about 33882.0979279619. The cubic root of 1147996560 is about 1047.0807986110.

The spelling of 1147996560 in words is "one billion, one hundred forty-seven million, nine hundred ninety-six thousand, five hundred sixty".