40015422 has 12 divisors (see below), whose sum is σ = 86700120. Its totient is φ = 13338468.

The previous prime is 40015421. The next prime is 40015429. The reversal of 40015422 is 22451004.

40015422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2223079 = 40015422 / (4 + 0 + 0 + 1 + 5 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 40015395 and 40015404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40015421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111522 + ... + 1111557.

It is an arithmetic number, because the mean of its divisors is an integer number (7225010).

Almost surely, 2^40015422 is an apocalyptic number.

40015422 is an abundant number, since it is smaller than the sum of its proper divisors (46684698).

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

40015422 is a wasteful number, since it uses less digits than its factorization.

40015422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223087 (or 2223084 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40015422 is about 6325.7744189941. The cubic root of 40015422 is about 342.0391357697.

Adding to 40015422 its reverse (22451004), we get a palindrome (62466426).

The spelling of 40015422 in words is "forty million, fifteen thousand, four hundred twenty-two".