40024340 has 24 divisors (see below), whose sum is σ = 84494760. Its totient is φ = 15925248.

The previous prime is 40024339. The next prime is 40024351. The reversal of 40024340 is 4342004.

It can be written as a sum of positive squares in 4 ways, for example, as 309136 + 39715204 = 556^2 + 6302^2 .

It is a congruent number.

It is an unprimeable number.

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, 1325 + ... + 9044.

It is an arithmetic number, because the mean of its divisors is an integer number (3520615).

Almost surely, 2^40024340 is an apocalyptic number.

It is an amenable number.

40024340 is an abundant number, since it is smaller than the sum of its proper divisors (44470420).

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

40024340 is a wasteful number, since it uses less digits than its factorization.

40024340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571 (or 10569 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 40024340 is about 6326.4792736561. The cubic root of 40024340 is about 342.0645432942.

Adding to 40024340 its reverse (4342004), we get a palindrome (44366344).

The spelling of 40024340 in words is "forty million, twenty-four thousand, three hundred forty".