40480728 has 16 divisors (see below), whose sum is σ = 101201880. Its totient is φ = 13493568.

The previous prime is 40480717. The next prime is 40480729. The reversal of 40480728 is 82708404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40480729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843325 + ... + 843372.

Almost surely, 2^40480728 is an apocalyptic number.

It is an amenable number.

40480728 is an abundant number, since it is smaller than the sum of its proper divisors (60721152).

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

40480728 is a wasteful number, since it uses less digits than its factorization.

40480728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686706 (or 1686702 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 40480728 is about 6362.4466991873. The cubic root of 40480728 is about 343.3597926844.

The spelling of 40480728 in words is "forty million, four hundred eighty thousand, seven hundred twenty-eight".