40972318 has 8 divisors (see below), whose sum is σ = 61871400. Its totient is φ = 20348520.

The previous prime is 40972279. The next prime is 40972403. The reversal of 40972318 is 81327904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 68448 + ... + 69043.

It is an arithmetic number, because the mean of its divisors is an integer number (7733925).

Almost surely, 2^40972318 is an apocalyptic number.

40972318 is a deficient number, since it is larger than the sum of its proper divisors (20899082).

40972318 is a wasteful number, since it uses less digits than its factorization.

40972318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137642.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 40972318 is about 6400.9622714089. The cubic root of 40972318 is about 344.7441020544.

It can be divided in two parts, 409 and 72318, that added together give a palindrome (72727).

The spelling of 40972318 in words is "forty million, nine hundred seventy-two thousand, three hundred eighteen".