40047518 has 16 divisors (see below), whose sum is σ = 68845920. Its totient is φ = 17114976.

The previous prime is 40047509. The next prime is 40047523. The reversal of 40047518 is 81574004.

40047518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 1388 + ... + 9056.

It is an arithmetic number, because the mean of its divisors is an integer number (4302870).

Almost surely, 2^40047518 is an apocalyptic number.

40047518 is a deficient number, since it is larger than the sum of its proper divisors (28798402).

40047518 is a wasteful number, since it uses less digits than its factorization.

40047518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8051.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 40047518 is about 6328.3108330739. The cubic root of 40047518 is about 342.1305601400.

The spelling of 40047518 in words is "forty million, forty-seven thousand, five hundred eighteen".