40207340 has 48 divisors (see below), whose sum is σ = 88058880. Its totient is φ = 15402240.

The previous prime is 40207339. The next prime is 40207351. The reversal of 40207340 is 4370204.

It is a happy number.

40207340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 104789 + ... + 105171.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^40207340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40207340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44029440).

40207340 is an abundant number, since it is smaller than the sum of its proper divisors (47851540).

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

40207340 is a wasteful number, since it uses less digits than its factorization.

40207340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 40207340 is about 6340.9257999128. The cubic root of 40207340 is about 342.5850819582.

Adding to 40207340 its reverse (4370204), we get a palindrome (44577544).

The spelling of 40207340 in words is "forty million, two hundred seven thousand, three hundred forty".