1071140784 has 120 divisors (see below), whose sum is σ = 3232761840. Its totient is φ = 304722432.

The previous prime is 1071140773. The next prime is 1071140801. The reversal of 1071140784 is 4870411701.

It is a super-2 number, since 2×1071140784² = 2294685158296269312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631842 + ... + 633534.

It is an arithmetic number, because the mean of its divisors is an integer number (26939682).

Almost surely, 2^1071140784 is an apocalyptic number.

1071140784 is a gapful number since it is divisible by the number (14) 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 1071140784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616380920).

1071140784 is an abundant number, since it is smaller than the sum of its proper divisors (2161621056).

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

1071140784 is a wasteful number, since it uses less digits than its factorization.

1071140784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1974 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 33.

The square root of 1071140784 is about 32728.2872145794. The cubic root of 1071140784 is about 1023.1724830976.

The spelling of 1071140784 in words is "one billion, seventy-one million, one hundred forty thousand, seven hundred eighty-four".