1140404064 has 96 divisors (see below), whose sum is σ = 3208222080. Its totient is φ = 353421312.

The previous prime is 1140404017. The next prime is 1140404077. The reversal of 1140404064 is 4604040411.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131247 + ... + 139665.

It is an arithmetic number, because the mean of its divisors is an integer number (33418980).

Almost surely, 2^1140404064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140404064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604111040).

1140404064 is an abundant number, since it is smaller than the sum of its proper divisors (2067818016).

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

1140404064 is a wasteful number, since it uses less digits than its factorization.

1140404064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8532 (or 8524 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1140404064 is about 33769.8691735695. The cubic root of 1140404064 is about 1044.7673341741.

Adding to 1140404064 its reverse (4604040411), we get a palindrome (5744444475).

The spelling of 1140404064 in words is "one billion, one hundred forty million, four hundred four thousand, sixty-four".