40645436 has 24 divisors (see below), whose sum is σ = 81108720. Its totient is φ = 17655552.

The previous prime is 40645399. The next prime is 40645463. The reversal of 40645436 is 63454604.

40645436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 22106 + ... + 23873.

It is an arithmetic number, because the mean of its divisors is an integer number (3379530).

Almost surely, 2^40645436 is an apocalyptic number.

It is an amenable number.

40645436 is a deficient number, since it is larger than the sum of its proper divisors (40463284).

40645436 is a wasteful number, since it uses less digits than its factorization.

40645436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46013 (or 46011 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 40645436 is about 6375.3773221669. The cubic root of 40645436 is about 343.8248499926.

The spelling of 40645436 in words is "forty million, six hundred forty-five thousand, four hundred thirty-six".