1147240260 has 240 divisors, whose sum is σ = 3723073200. Its totient is φ = 295612416.

The previous prime is 1147240231. The next prime is 1147240277. The reversal of 1147240260 is 620427411.

It can be written as a sum of positive squares in 8 ways, for example, as 11819844 + 1135420416 = 3438^2 + 33696^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10525086 + ... + 10525194.

It is an arithmetic number, because the mean of its divisors is an integer number (15512805).

Almost surely, 2^1147240260 is an apocalyptic number.

1147240260 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 1147240260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861536600).

1147240260 is an abundant number, since it is smaller than the sum of its proper divisors (2575832940).

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

1147240260 is a wasteful number, since it uses less digits than its factorization.

1147240260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1147240260 is about 33870.9353280951. The cubic root of 1147240260 is about 1046.8508091952.

Adding to 1147240260 its reverse (620427411), we get a palindrome (1767667671).

The spelling of 1147240260 in words is "one billion, one hundred forty-seven million, two hundred forty thousand, two hundred sixty".