1140797056 has 128 divisors (see below), whose sum is σ = 2733730560. Its totient is φ = 463626240.

The previous prime is 1140797039. The next prime is 1140797057. The reversal of 1140797056 is 6507970411.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1140797057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4059636 + ... + 4059916.

It is an arithmetic number, because the mean of its divisors is an integer number (21357270).

Almost surely, 2^1140797056 is an apocalyptic number.

1140797056 is a gapful number since it is divisible by the number (16) 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 1140797056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366865280).

1140797056 is an abundant number, since it is smaller than the sum of its proper divisors (1592933504).

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

1140797056 is a wasteful number, since it uses less digits than its factorization.

1140797056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 1140797056 is about 33775.6873505189. The cubic root of 1140797056 is about 1044.8873320072.

The spelling of 1140797056 in words is "one billion, one hundred forty million, seven hundred ninety-seven thousand, fifty-six".