40128448 has 28 divisors (see below), whose sum is σ = 79854552. Its totient is φ = 20007680.

The previous prime is 40128433. The next prime is 40128469. The reversal of 40128448 is 84482104.

It is a super-2 number, since 2×40128448² = 3220584677777408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30786 + ... + 32062.

Almost surely, 2^40128448 is an apocalyptic number.

It is an amenable number.

40128448 is a deficient number, since it is larger than the sum of its proper divisors (39726104).

40128448 is a wasteful number, since it uses less digits than its factorization.

40128448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 40128448 is about 6334.7018872241. The cubic root of 40128448 is about 342.3608698405.

The spelling of 40128448 in words is "forty million, one hundred twenty-eight thousand, four hundred forty-eight".