40731765 has 16 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 21674432.

The previous prime is 40731727. The next prime is 40731787. The reversal of 40731765 is 56713704.

40731765 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40731765 - 2⁶ = 40731701 is a prime.

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, 4351 + ... + 10019.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^40731765 is an apocalyptic number.

It is an amenable number.

40731765 is a deficient number, since it is larger than the sum of its proper divisors (24586635).

40731765 is a wasteful number, since it uses less digits than its factorization.

40731765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 40731765 is about 6382.1442321527. The cubic root of 40731765 is about 344.0681004755.

The spelling of 40731765 in words is "forty million, seven hundred thirty-one thousand, seven hundred sixty-five".