4002044240 has 40 divisors (see below), whose sum is σ = 9307556808. Its totient is φ = 1600335360.

The previous prime is 4002044213. The next prime is 4002044251. The reversal of 4002044240 is 424402004.

It can be written as a sum of positive squares in 4 ways, for example, as 10837264 + 3991206976 = 3292^2 + 63176^2 .

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 (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389570 + ... + 399710.

Almost surely, 2^4002044240 is an apocalyptic number.

4002044240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4002044240 is an abundant number, since it is smaller than the sum of its proper divisors (5305512568).

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

4002044240 is a wasteful number, since it uses less digits than its factorization.

4002044240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15087 (or 15081 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 4002044240 is about 63261.7122752775. The cubic root of 4002044240 is about 1587.6714249750.

Adding to 4002044240 its reverse (424402004), we get a palindrome (4426446244).

The spelling of 4002044240 in words is "four billion, two million, forty-four thousand, two hundred forty".