40003512 has 64 divisors (see below), whose sum is σ = 108163200. Its totient is φ = 12286080.

The previous prime is 40003511. The next prime is 40003519. The reversal of 40003512 is 21530004.

40003512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40003491 and 40003500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40003511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15687 + ... + 18057.

It is an arithmetic number, because the mean of its divisors is an integer number (1690050).

Almost surely, 2^40003512 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 40003512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54081600).

40003512 is an abundant number, since it is smaller than the sum of its proper divisors (68159688).

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

40003512 is a wasteful number, since it uses less digits than its factorization.

40003512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40003512 is about 6324.8329622212. The cubic root of 40003512 is about 342.0051981016.

Adding to 40003512 its reverse (21530004), we get a palindrome (61533516).

The spelling of 40003512 in words is "forty million, three thousand, five hundred twelve".