40518222 has 32 divisors (see below), whose sum is σ = 85948800. Its totient is φ = 12698208.

The previous prime is 40518211. The next prime is 40518223. The reversal of 40518222 is 22281504.

It is a junction number, because it is equal to n+sod(n) for n = 40518192 and 40518201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14568 + ... + 17124.

It is an arithmetic number, because the mean of its divisors is an integer number (2685900).

Almost surely, 2^40518222 is an apocalyptic number.

40518222 is an abundant number, since it is smaller than the sum of its proper divisors (45430578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40518222 is a wasteful number, since it uses less digits than its factorization.

40518222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40518222 is about 6365.3925252101. The cubic root of 40518222 is about 343.4657687052.

Adding to 40518222 its reverse (22281504), we get a palindrome (62799726).

The spelling of 40518222 in words is "forty million, five hundred eighteen thousand, two hundred twenty-two".