4040032520 has 16 divisors (see below), whose sum is σ = 9090073260. Its totient is φ = 1616012992.

The previous prime is 4040032511. The next prime is 4040032589. The reversal of 4040032520 is 252300404.

It can be written as a sum of positive squares in 2 ways, for example, as 3749602756 + 290429764 = 61234^2 + 17042^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4040032492 and 4040032501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50500367 + ... + 50500446.

Almost surely, 2^4040032520 is an apocalyptic number.

4040032520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4040032520 is an abundant number, since it is smaller than the sum of its proper divisors (5050040740).

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

4040032520 is a wasteful number, since it uses less digits than its factorization.

4040032520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101000824 (or 101000820 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 4040032520 is about 63561.2501450373. The cubic root of 4040032520 is about 1592.6791217611.

Adding to 4040032520 its reverse (252300404), we get a palindrome (4292332924).

The spelling of 4040032520 in words is "four billion, forty million, thirty-two thousand, five hundred twenty".