40913728 has 28 divisors (see below), whose sum is σ = 81637632. Its totient is φ = 20343680.

The previous prime is 40913701. The next prime is 40913779. The reversal of 40913728 is 82731904.

It is a junction number, because it is equal to n+sod(n) for n = 40913693 and 40913702.

It is a congruent number.

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, 10551 + ... + 13897.

Almost surely, 2^40913728 is an apocalyptic number.

It is an amenable number.

40913728 is a deficient number, since it is larger than the sum of its proper divisors (40723904).

40913728 is a wasteful number, since it uses less digits than its factorization.

40913728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3540 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 40913728 is about 6396.3839784678. The cubic root of 40913728 is about 344.5796968047.

The spelling of 40913728 in words is "forty million, nine hundred thirteen thousand, seven hundred twenty-eight".