40005340 has 24 divisors (see below), whose sum is σ = 86062032. Its totient is φ = 15611520.

The previous prime is 40005337. The next prime is 40005347. The reversal of 40005340 is 4350004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40005347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23574 + ... + 25213.

It is an arithmetic number, because the mean of its divisors is an integer number (3585918).

Almost surely, 2^40005340 is an apocalyptic number.

It is an amenable number.

40005340 is an abundant number, since it is smaller than the sum of its proper divisors (46056692).

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

40005340 is a wasteful number, since it uses less digits than its factorization.

40005340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48837 (or 48835 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40005340 is about 6324.9774703156. The cubic root of 40005340 is about 342.0104074441.

Adding to 40005340 its reverse (4350004), we get a palindrome (44355344).

The spelling of 40005340 in words is "forty million, five thousand, three hundred forty".