1172281120 has 96 divisors (see below), whose sum is σ = 2882912256. Its totient is φ = 449971200.

The previous prime is 1172281109. The next prime is 1172281217. The reversal of 1172281120 is 211822711.

It is a happy 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, 628990 + ... + 630850.

It is an arithmetic number, because the mean of its divisors is an integer number (30030336).

Almost surely, 2^1172281120 is an apocalyptic number.

1172281120 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 1172281120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441456128).

1172281120 is an abundant number, since it is smaller than the sum of its proper divisors (1710631136).

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

1172281120 is a wasteful number, since it uses less digits than its factorization.

1172281120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2026 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 1172281120 is about 34238.5910925085. The cubic root of 1172281120 is about 1054.4126077383.

The spelling of 1172281120 in words is "one billion, one hundred seventy-two million, two hundred eighty-one thousand, one hundred twenty".