40585240 has 16 divisors (see below), whose sum is σ = 91316880. Its totient is φ = 16234080.

The previous prime is 40585229. The next prime is 40585243. The reversal of 40585240 is 4258504.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 40585199 and 40585208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40585243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507276 + ... + 507355.

It is an arithmetic number, because the mean of its divisors is an integer number (5707305).

Almost surely, 2^40585240 is an apocalyptic number.

40585240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40585240 is an abundant number, since it is smaller than the sum of its proper divisors (50731640).

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

40585240 is a wasteful number, since it uses less digits than its factorization.

40585240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014642 (or 1014638 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 40585240 is about 6370.6545974492. The cubic root of 40585240 is about 343.6550309551.

The spelling of 40585240 in words is "forty million, five hundred eighty-five thousand, two hundred forty".