40338518 has 16 divisors (see below), whose sum is σ = 69891984. Its totient is φ = 17256960.

The previous prime is 40338511. The next prime is 40338523. The reversal of 40338518 is 81583304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40338511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53555 + ... + 54302.

It is an arithmetic number, because the mean of its divisors is an integer number (4368249).

Almost surely, 2^40338518 is an apocalyptic number.

40338518 is a deficient number, since it is larger than the sum of its proper divisors (29553466).

40338518 is a wasteful number, since it uses less digits than its factorization.

40338518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107887.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40338518 is about 6351.2611346094. The cubic root of 40338518 is about 342.9572432091.

The spelling of 40338518 in words is "forty million, three hundred thirty-eight thousand, five hundred eighteen".