40813128 has 48 divisors (see below), whose sum is σ = 110981520. Its totient is φ = 13549536.

The previous prime is 40813103. The next prime is 40813133. The reversal of 40813128 is 82131804.

It is a super-2 number, since 2×40813128² = 3331422834288768, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 19375 + ... + 21377.

It is an arithmetic number, because the mean of its divisors is an integer number (2312115).

Almost surely, 2^40813128 is an apocalyptic number.

It is an amenable number.

40813128 is an abundant number, since it is smaller than the sum of its proper divisors (70168392).

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

40813128 is a wasteful number, since it uses less digits than its factorization.

40813128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 40813128 is about 6388.5153204794. The cubic root of 40813128 is about 344.2970437716.

The spelling of 40813128 in words is "forty million, eight hundred thirteen thousand, one hundred twenty-eight".