40805506 has 16 divisors (see below), whose sum is σ = 70098624. Its totient is φ = 17451504.

The previous prime is 40805503. The next prime is 40805509. The reversal of 40805506 is 60550804.

It is an interprime number because it is at equal distance from previous prime (40805503) and next prime (40805509).

It is not an unprimeable number, because it can be changed into a prime (40805503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4536 + ... + 10108.

It is an arithmetic number, because the mean of its divisors is an integer number (4381164).

Almost surely, 2^40805506 is an apocalyptic number.

40805506 is a deficient number, since it is larger than the sum of its proper divisors (29293118).

40805506 is a wasteful number, since it uses less digits than its factorization.

40805506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 40805506 is about 6387.9187533969. The cubic root of 40805506 is about 344.2756095291.

The spelling of 40805506 in words is "forty million, eight hundred five thousand, five hundred six".