40666872 has 32 divisors (see below), whose sum is σ = 102660480. Its totient is φ = 13423200.

The previous prime is 40666861. The next prime is 40666877. The reversal of 40666872 is 27866604.

40666872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40666872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666877) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5754 + ... + 10697.

It is an arithmetic number, because the mean of its divisors is an integer number (3208140).

Almost surely, 2^40666872 is an apocalyptic number.

It is an amenable number.

40666872 is an abundant number, since it is smaller than the sum of its proper divisors (61993608).

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

40666872 is a wasteful number, since it uses less digits than its factorization.

40666872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16563 (or 16559 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 40666872 is about 6377.0582559672. The cubic root of 40666872 is about 343.8852826424.

The spelling of 40666872 in words is "forty million, six hundred sixty-six thousand, eight hundred seventy-two".