40668448 has 24 divisors (see below), whose sum is σ = 80704512. Its totient is φ = 20172096.

The previous prime is 40668443. The next prime is 40668457. The reversal of 40668448 is 84486604.

It is a self number, because there is not a number n which added to its sum of digits gives 40668448.

It is not an unprimeable number, because it can be changed into a prime (40668443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940 + ... + 9067.

It is an arithmetic number, because the mean of its divisors is an integer number (3362688).

Almost surely, 2^40668448 is an apocalyptic number.

It is an amenable number.

40668448 is a deficient number, since it is larger than the sum of its proper divisors (40036064).

40668448 is a wasteful number, since it uses less digits than its factorization.

40668448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10144 (or 10136 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The square root of 40668448 is about 6377.1818227176. The cubic root of 40668448 is about 343.8897248839.

The spelling of 40668448 in words is "forty million, six hundred sixty-eight thousand, four hundred forty-eight".