40517138 has 8 divisors (see below), whose sum is σ = 60827760. Its totient is φ = 20241220.

The previous prime is 40517131. The next prime is 40517189. The reversal of 40517138 is 83171504.

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

It is a super-2 number, since 2×40517138² = 3283276943422088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40517138.

It is not an unprimeable number, because it can be changed into a prime (40517131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5528 + ... + 10563.

It is an arithmetic number, because the mean of its divisors is an integer number (7603470).

Almost surely, 2^40517138 is an apocalyptic number.

40517138 is a deficient number, since it is larger than the sum of its proper divisors (20310622).

40517138 is a wasteful number, since it uses less digits than its factorization.

40517138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17352.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 40517138 is about 6365.3073767101. The cubic root of 40517138 is about 343.4627057194.

The spelling of 40517138 in words is "forty million, five hundred seventeen thousand, one hundred thirty-eight".