4026002040 has 96 divisors (see below), whose sum is σ = 13184542800. Its totient is φ = 1065392640.

The previous prime is 4026002039. The next prime is 4026002077. The reversal of 4026002040 is 402006204.

4026002040 is a `hidden beast` number, since 4 + 0 + 2 + 600 + 20 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4476 + ... + 89844.

Almost surely, 2^4026002040 is an apocalyptic number.

4026002040 is a gapful number since it is divisible by the number (40) 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 4026002040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6592271400).

4026002040 is an abundant number, since it is smaller than the sum of its proper divisors (9158540760).

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

4026002040 is a wasteful number, since it uses less digits than its factorization.

4026002040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85517 (or 85510 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4026002040 is about 63450.7843923146. The cubic root of 4026002040 is about 1590.8332644369.

Adding to 4026002040 its reverse (402006204), we get a palindrome (4428008244).

The spelling of 4026002040 in words is "four billion, twenty-six million, two thousand, forty".