1171028040 has 384 divisors, whose sum is σ = 4446109440. Its totient is φ = 241532928.

The previous prime is 1171028039. The next prime is 1171028071. The reversal of 1171028040 is 408201711.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1171028040.

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, 10363024 + ... + 10363136.

It is an arithmetic number, because the mean of its divisors is an integer number (11578410).

Almost surely, 2^1171028040 is an apocalyptic number.

1171028040 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 1171028040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2223054720).

1171028040 is an abundant number, since it is smaller than the sum of its proper divisors (3275081400).

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

1171028040 is a wasteful number, since it uses less digits than its factorization.

1171028040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 1171028040 is about 34220.2869654829. The cubic root of 1171028040 is about 1054.0367779751.

Adding to 1171028040 its reverse (408201711), we get a palindrome (1579229751).

The spelling of 1171028040 in words is "one billion, one hundred seventy-one million, twenty-eight thousand, forty".