40644266 has 16 divisors (see below), whose sum is σ = 68511744. Its totient is φ = 17943024.

The previous prime is 40644251. The next prime is 40644281. The reversal of 40644266 is 66244604.

40644266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40644251) and next prime (40644281).

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 7 ways as a sum of consecutive naturals, for example, 33386 + ... + 34581.

It is an arithmetic number, because the mean of its divisors is an integer number (4281984).

Almost surely, 2^40644266 is an apocalyptic number.

40644266 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40644266 is a deficient number, since it is larger than the sum of its proper divisors (27867478).

40644266 is a wasteful number, since it uses less digits than its factorization.

40644266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68005.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 40644266 is about 6375.2855622317. The cubic root of 40644266 is about 343.8215509019.

The spelling of 40644266 in words is "forty million, six hundred forty-four thousand, two hundred sixty-six".