40538586 has 64 divisors (see below), whose sum is σ = 92316672. Its totient is φ = 11760000.

The previous prime is 40538573. The next prime is 40538599. The reversal of 40538586 is 68583504.

It is a happy number.

40538586 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40538573) and next prime (40538599).

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 31 ways as a sum of consecutive naturals, for example, 192021 + ... + 192231.

It is an arithmetic number, because the mean of its divisors is an integer number (1442448).

Almost surely, 2^40538586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40538586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46158336).

40538586 is an abundant number, since it is smaller than the sum of its proper divisors (51778086).

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

40538586 is a wasteful number, since it uses less digits than its factorization.

40538586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 40538586 is about 6366.9919114131. The cubic root of 40538586 is about 343.5232997381.

The spelling of 40538586 in words is "forty million, five hundred thirty-eight thousand, five hundred eighty-six".