40131128 has 32 divisors (see below), whose sum is σ = 79758000. Its totient is φ = 18896640.

The previous prime is 40131121. The next prime is 40131137. The reversal of 40131128 is 82113104.

It is a super-2 number, since 2×40131128² = 3221014869104768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7403 + ... + 11621.

Almost surely, 2^40131128 is an apocalyptic number.

It is an amenable number.

40131128 is a deficient number, since it is larger than the sum of its proper divisors (39626872).

40131128 is a wasteful number, since it uses less digits than its factorization.

40131128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 40131128 is about 6334.9134169300. The cubic root of 40131128 is about 342.3684912558.

The spelling of 40131128 in words is "forty million, one hundred thirty-one thousand, one hundred twenty-eight".