1147868280 has 384 divisors, whose sum is σ = 4374432000. Its totient is φ = 266872320.

The previous prime is 1147868269. The next prime is 1147868311. The reversal of 1147868280 is 828687411.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3467715 + ... + 3468045.

It is an arithmetic number, because the mean of its divisors is an integer number (11391750).

Almost surely, 2^1147868280 is an apocalyptic number.

1147868280 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 1147868280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2187216000).

1147868280 is an abundant number, since it is smaller than the sum of its proper divisors (3226563720).

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

1147868280 is a wasteful number, since it uses less digits than its factorization.

1147868280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 1147868280 is about 33880.2048399947. The cubic root of 1147868280 is about 1047.0417960179.

The spelling of 1147868280 in words is "one billion, one hundred forty-seven million, eight hundred sixty-eight thousand, two hundred eighty".