40343518 has 16 divisors (see below), whose sum is σ = 63286560. Its totient is φ = 19251936.

The previous prime is 40343461. The next prime is 40343519. The reversal of 40343518 is 81534304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31996 + ... + 33232.

It is an arithmetic number, because the mean of its divisors is an integer number (3955410).

Almost surely, 2^40343518 is an apocalyptic number.

40343518 is a deficient number, since it is larger than the sum of its proper divisors (22943042).

40343518 is a wasteful number, since it uses less digits than its factorization.

40343518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40343518 is about 6351.6547450251. The cubic root of 40343518 is about 342.9714125891.

The spelling of 40343518 in words is "forty million, three hundred forty-three thousand, five hundred eighteen".