40245518 has 16 divisors (see below), whose sum is σ = 62185536. Its totient is φ = 19522560.

The previous prime is 40245503. The next prime is 40245521. The reversal of 40245518 is 81554204.

It is a congruent number.

It is an unprimeable number.

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, 14555 + ... + 17097.

It is an arithmetic number, because the mean of its divisors is an integer number (3886596).

Almost surely, 2^40245518 is an apocalyptic number.

40245518 is a deficient number, since it is larger than the sum of its proper divisors (21940018).

40245518 is a wasteful number, since it uses less digits than its factorization.

40245518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2779.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 40245518 is about 6343.9355293067. The cubic root of 40245518 is about 342.6934790464.

The spelling of 40245518 in words is "forty million, two hundred forty-five thousand, five hundred eighteen".