40415212 has 12 divisors (see below), whose sum is σ = 73165680. Its totient is φ = 19510736.

The previous prime is 40415201. The next prime is 40415231. The reversal of 40415212 is 21251404.

It is a super-2 number, since 2×40415212² = 3266778722009888, 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 40415212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174088 + ... + 174319.

It is an arithmetic number, because the mean of its divisors is an integer number (6097140).

Almost surely, 2^40415212 is an apocalyptic number.

It is an amenable number.

40415212 is a deficient number, since it is larger than the sum of its proper divisors (32750468).

40415212 is a wasteful number, since it uses less digits than its factorization.

40415212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348440 (or 348438 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 40415212 is about 6357.2959660535. The cubic root of 40415212 is about 343.1744558736.

Adding to 40415212 its reverse (21251404), we get a palindrome (61666616).

The spelling of 40415212 in words is "forty million, four hundred fifteen thousand, two hundred twelve".