40736728 has 32 divisors (see below), whose sum is σ = 79263360. Its totient is φ = 19607040.

The previous prime is 40736723. The next prime is 40736753. The reversal of 40736728 is 82763704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40736723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68400 + ... + 68992.

It is an arithmetic number, because the mean of its divisors is an integer number (2476980).

Almost surely, 2^40736728 is an apocalyptic number.

It is an amenable number.

40736728 is a deficient number, since it is larger than the sum of its proper divisors (38526632).

40736728 is a wasteful number, since it uses less digits than its factorization.

40736728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 40736728 is about 6382.5330394758. The cubic root of 40736728 is about 344.0820743411.

It can be divided in two parts, 4073 and 6728, that added together give a palindrome (10801).

The spelling of 40736728 in words is "forty million, seven hundred thirty-six thousand, seven hundred twenty-eight".