40805318 has 8 divisors (see below), whose sum is σ = 61238712. Its totient is φ = 20392416.

The previous prime is 40805311. The next prime is 40805329. The reversal of 40805318 is 81350804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40805318² = 3330147954162248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40805311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646 + ... + 9182.

It is an arithmetic number, because the mean of its divisors is an integer number (7654839).

Almost surely, 2^40805318 is an apocalyptic number.

40805318 is a deficient number, since it is larger than the sum of its proper divisors (20433394).

40805318 is a wasteful number, since it uses less digits than its factorization.

40805318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 40805318 is about 6387.9040381020. The cubic root of 40805318 is about 344.2750808103.

The spelling of 40805318 in words is "forty million, eight hundred five thousand, three hundred eighteen".