40303240 has 32 divisors (see below), whose sum is σ = 90881280. Its totient is φ = 16085952.

The previous prime is 40303231. The next prime is 40303253. The reversal of 40303240 is 4230304.

40303240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 24937 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (2840040).

Almost surely, 2^40303240 is an apocalyptic number.

40303240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40303240 is an abundant number, since it is smaller than the sum of its proper divisors (50578040).

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

40303240 is a wasteful number, since it uses less digits than its factorization.

40303240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 40303240 is about 6348.4832834308. The cubic root of 40303240 is about 342.8572364418.

Adding to 40303240 its reverse (4230304), we get a palindrome (44533544).

The spelling of 40303240 in words is "forty million, three hundred three thousand, two hundred forty".