40007506 has 32 divisors (see below), whose sum is σ = 75893760. Its totient is φ = 15363600.

The previous prime is 40007497. The next prime is 40007507. The reversal of 40007506 is 60570004.

40007506 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 (22).

It is not an unprimeable number, because it can be changed into a prime (40007507) 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, 9105 + ... + 12763.

It is an arithmetic number, because the mean of its divisors is an integer number (2371680).

Almost surely, 2^40007506 is an apocalyptic number.

40007506 is a deficient number, since it is larger than the sum of its proper divisors (35886254).

40007506 is a wasteful number, since it uses less digits than its factorization.

40007506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40007506 is about 6325.1486939044. The cubic root of 40007506 is about 342.0165797965.

The spelling of 40007506 in words is "forty million, seven thousand, five hundred six".