40666830 has 32 divisors (see below), whose sum is σ = 98841600. Its totient is φ = 10706592.

The previous prime is 40666819. The next prime is 40666849. The reversal of 40666830 is 3866604.

40666830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40666791 and 40666800.

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 in 15 ways as a sum of consecutive naturals, for example, 6210 + ... + 10949.

It is an arithmetic number, because the mean of its divisors is an integer number (3088800).

Almost surely, 2^40666830 is an apocalyptic number.

40666830 is an abundant number, since it is smaller than the sum of its proper divisors (58174770).

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

40666830 is a wasteful number, since it uses less digits than its factorization.

40666830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17248.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 40666830 is about 6377.0549629120. The cubic root of 40666830 is about 343.8851642562.

The spelling of 40666830 in words is "forty million, six hundred sixty-six thousand, eight hundred thirty".