40013340 has 24 divisors (see below), whose sum is σ = 112037520. Its totient is φ = 10670208.

The previous prime is 40013333. The next prime is 40013341. The reversal of 40013340 is 4331004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40013341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333385 + ... + 333504.

It is an arithmetic number, because the mean of its divisors is an integer number (4668230).

Almost surely, 2^40013340 is an apocalyptic number.

It is an amenable number.

40013340 is an abundant number, since it is smaller than the sum of its proper divisors (72024180).

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

40013340 is a wasteful number, since it uses less digits than its factorization.

40013340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666901 (or 666899 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40013340 is about 6325.6098520222. The cubic root of 40013340 is about 342.0332035750.

Adding to 40013340 its reverse (4331004), we get a palindrome (44344344).

The spelling of 40013340 in words is "forty million, thirteen thousand, three hundred forty".