40681822 has 4 divisors (see below), whose sum is σ = 61022736. Its totient is φ = 20340910.

The previous prime is 40681819. The next prime is 40681841. The reversal of 40681822 is 22818604.

40681822 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10170454 + ... + 10170457.

It is an arithmetic number, because the mean of its divisors is an integer number (15255684).

Almost surely, 2^40681822 is an apocalyptic number.

40681822 is a deficient number, since it is larger than the sum of its proper divisors (20340914).

40681822 is a wasteful number, since it uses less digits than its factorization.

40681822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20340913.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 40681822 is about 6378.2303188267. The cubic root of 40681822 is about 343.9274173076.

It can be divided in two parts, 406 and 81822, that added together give a palindrome (82228).

The spelling of 40681822 in words is "forty million, six hundred eighty-one thousand, eight hundred twenty-two".