40550218 has 16 divisors (see below), whose sum is σ = 64631520. Its totient is φ = 19026576.

The previous prime is 40550203. The next prime is 40550239. The reversal of 40550218 is 81205504.

It is a junction number, because it is equal to n+sod(n) for n = 40550192 and 40550201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921 + ... + 9052.

It is an arithmetic number, because the mean of its divisors is an integer number (4039470).

Almost surely, 2^40550218 is an apocalyptic number.

40550218 is a deficient number, since it is larger than the sum of its proper divisors (24081302).

40550218 is a wasteful number, since it uses less digits than its factorization.

40550218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 40550218 is about 6367.9053070849. The cubic root of 40550218 is about 343.5561530538.

The spelling of 40550218 in words is "forty million, five hundred fifty thousand, two hundred eighteen".