40738238 has 16 divisors (see below), whose sum is σ = 63148896. Its totient is φ = 19699680.

The previous prime is 40738231. The next prime is 40738241. The reversal of 40738238 is 83283704.

It is a junction number, because it is equal to n+sod(n) for n = 40738198 and 40738207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40738231) 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, 4820 + ... + 10232.

It is an arithmetic number, because the mean of its divisors is an integer number (3946806).

Almost surely, 2^40738238 is an apocalyptic number.

40738238 is a deficient number, since it is larger than the sum of its proper divisors (22410658).

40738238 is a wasteful number, since it uses less digits than its factorization.

40738238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 40738238 is about 6382.6513299725. The cubic root of 40738238 is about 344.0863256850.

The spelling of 40738238 in words is "forty million, seven hundred thirty-eight thousand, two hundred thirty-eight".