40960728 has 40 divisors (see below), whose sum is σ = 114729780. Its totient is φ = 13653360.

The previous prime is 40960721. The next prime is 40960729. The reversal of 40960728 is 82706904.

40960728 is a `hidden beast` number, since 40 + 9 + 607 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 40960692 and 40960701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40960721) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30958 + ... + 32253.

Almost surely, 2^40960728 is an apocalyptic number.

It is an amenable number.

40960728 is an abundant number, since it is smaller than the sum of its proper divisors (73769052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40960728 is a wasteful number, since it uses less digits than its factorization.

40960728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63229 (or 63216 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40960728 is about 6400.0568747473. The cubic root of 40960728 is about 344.7115926176.

The spelling of 40960728 in words is "forty million, nine hundred sixty thousand, seven hundred twenty-eight".