40584138 has 24 divisors (see below), whose sum is σ = 92858208. Its totient is φ = 11583672.

The previous prime is 40584127. The next prime is 40584143. The reversal of 40584138 is 83148504.

40584138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40584099 and 40584108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40795 + ... + 41777.

It is an arithmetic number, because the mean of its divisors is an integer number (3869092).

Almost surely, 2^40584138 is an apocalyptic number.

40584138 is an abundant number, since it is smaller than the sum of its proper divisors (52274070).

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

40584138 is an frugal number, since it uses more digits than its factorization.

40584138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 40584138 is about 6370.5681065349. The cubic root of 40584138 is about 343.6519205363.

The spelling of 40584138 in words is "forty million, five hundred eighty-four thousand, one hundred thirty-eight".