40436740 has 12 divisors (see below), whose sum is σ = 84917196. Its totient is φ = 16174688.

The previous prime is 40436707. The next prime is 40436749. The reversal of 40436740 is 4763404.

It can be written as a sum of positive squares in 2 ways, for example, as 5673924 + 34762816 = 2382^2 + 5896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40436699 and 40436708.

It is not an unprimeable number, because it can be changed into a prime (40436749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010899 + ... + 1010938.

It is an arithmetic number, because the mean of its divisors is an integer number (7076433).

Almost surely, 2^40436740 is an apocalyptic number.

It is an amenable number.

40436740 is an abundant number, since it is smaller than the sum of its proper divisors (44480456).

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

40436740 is a wasteful number, since it uses less digits than its factorization.

40436740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021846 (or 2021844 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 40436740 is about 6358.9889133415. The cubic root of 40436740 is about 343.2353780524.

The spelling of 40436740 in words is "forty million, four hundred thirty-six thousand, seven hundred forty".