40785240 has 64 divisors (see below), whose sum is σ = 124104960. Its totient is φ = 10720640.

The previous prime is 40785221. The next prime is 40785263. The reversal of 40785240 is 4258704.

40785240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40785198 and 40785207.

It is a congruent number.

It is an unprimeable number.

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, 6127 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (1939140).

Almost surely, 2^40785240 is an apocalyptic number.

40785240 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 40785240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62052480).

40785240 is an abundant number, since it is smaller than the sum of its proper divisors (83319720).

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

40785240 is a wasteful number, since it uses less digits than its factorization.

40785240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872 (or 4868 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 40785240 is about 6386.3322807383. The cubic root of 40785240 is about 344.2186054173.

The spelling of 40785240 in words is "forty million, seven hundred eighty-five thousand, two hundred forty".