40513240 has 16 divisors (see below), whose sum is σ = 91154880. Its totient is φ = 16205280.

The previous prime is 40513237. The next prime is 40513241. The reversal of 40513240 is 4231504.

40513240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40513241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 506376 + ... + 506455.

It is an arithmetic number, because the mean of its divisors is an integer number (5697180).

Almost surely, 2^40513240 is an apocalyptic number.

40513240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40513240 is an abundant number, since it is smaller than the sum of its proper divisors (50641640).

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

40513240 is a wasteful number, since it uses less digits than its factorization.

40513240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012842 (or 1012838 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40513240 is about 6365.0011783188. The cubic root of 40513240 is about 343.4516909519.

Adding to 40513240 its reverse (4231504), we get a palindrome (44744744).

The spelling of 40513240 in words is "forty million, five hundred thirteen thousand, two hundred forty".