1004011440 has 40 divisors (see below), whose sum is σ = 3112436208. Its totient is φ = 267736320.

The previous prime is 1004011427. The next prime is 1004011447. The reversal of 1004011440 is 441104001.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1004011447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2091451 + ... + 2091930.

Almost surely, 2^1004011440 is an apocalyptic number.

1004011440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004011440 is an abundant number, since it is smaller than the sum of its proper divisors (2108424768).

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

1004011440 is a wasteful number, since it uses less digits than its factorization.

1004011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183397 (or 4183391 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1004011440 is about 31686.1395565948. The cubic root of 1004011440 is about 1001.3353626794.

Adding to 1004011440 its reverse (441104001), we get a palindrome (1445115441).

The spelling of 1004011440 in words is "one billion, four million, eleven thousand, four hundred forty".