40624138 has 8 divisors (see below), whose sum is σ = 60996420. Its totient is φ = 20292000.

The previous prime is 40624093. The next prime is 40624151. The reversal of 40624138 is 83142604.

It can be written as a sum of positive squares in 2 ways, for example, as 38900169 + 1723969 = 6237^2 + 1313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 7363 + ... + 11638.

Almost surely, 2^40624138 is an apocalyptic number.

40624138 is a deficient number, since it is larger than the sum of its proper divisors (20372282).

40624138 is a wasteful number, since it uses less digits than its factorization.

40624138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20072.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40624138 is about 6373.7067707889. The cubic root of 40624138 is about 343.7647853475.

The spelling of 40624138 in words is "forty million, six hundred twenty-four thousand, one hundred thirty-eight".