40215422 has 16 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 18494112.

The previous prime is 40215397. The next prime is 40215433. The reversal of 40215422 is 22451204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40215394 and 40215403.

It is a congruent number.

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, 4979 + ... + 10257.

It is an arithmetic number, because the mean of its divisors is an integer number (4074840).

Almost surely, 2^40215422 is an apocalyptic number.

40215422 is a deficient number, since it is larger than the sum of its proper divisors (24982018).

40215422 is a wasteful number, since it uses less digits than its factorization.

40215422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5587.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 40215422 is about 6341.5630565342. The cubic root of 40215422 is about 342.6080345429.

Adding to 40215422 its reverse (22451204), we get a palindrome (62666626).

The spelling of 40215422 in words is "forty million, two hundred fifteen thousand, four hundred twenty-two".