40668384 has 48 divisors (see below), whose sum is σ = 108782352. Its totient is φ = 13298688.

The previous prime is 40668367. The next prime is 40668391. The reversal of 40668384 is 48386604.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 1092 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (2266299).

Almost surely, 2^40668384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40668384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54391176).

40668384 is an abundant number, since it is smaller than the sum of its proper divisors (68113968).

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

40668384 is a wasteful number, since it uses less digits than its factorization.

40668384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8059 (or 8051 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 40668384 is about 6377.1768048252. The cubic root of 40668384 is about 343.8895444906.

The spelling of 40668384 in words is "forty million, six hundred sixty-eight thousand, three hundred eighty-four".