40728986 has 8 divisors (see below), whose sum is σ = 61254144. Its totient is φ = 20310940.

The previous prime is 40728979. The next prime is 40729033. The reversal of 40728986 is 68982704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25820 + ... + 27351.

It is an arithmetic number, because the mean of its divisors is an integer number (7656768).

Almost surely, 2^40728986 is an apocalyptic number.

40728986 is a deficient number, since it is larger than the sum of its proper divisors (20525158).

40728986 is a wasteful number, since it uses less digits than its factorization.

40728986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53556.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 40728986 is about 6381.9265116421. The cubic root of 40728986 is about 344.0602754034.

It can be divided in two parts, 40728 and 986, that added together give a palindrome (41714).

The spelling of 40728986 in words is "forty million, seven hundred twenty-eight thousand, nine hundred eighty-six".