40003320 has 64 divisors (see below), whose sum is σ = 137157120. Its totient is φ = 9143424.

The previous prime is 40003319. The next prime is 40003387. The reversal of 40003320 is 2330004.

40003320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40003320² = 3200531222044800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 40003296 and 40003305.

It is a congruent number.

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, 22972 + ... + 24651.

It is an arithmetic number, because the mean of its divisors is an integer number (2143080).

Almost surely, 2^40003320 is an apocalyptic number.

40003320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40003320 is an abundant number, since it is smaller than the sum of its proper divisors (97153800).

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

40003320 is a wasteful number, since it uses less digits than its factorization.

40003320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47644 (or 47640 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 40003320 is about 6324.8177839365. The cubic root of 40003320 is about 342.0046509405.

Adding to 40003320 its reverse (2330004), we get a palindrome (42333324).

The spelling of 40003320 in words is "forty million, three thousand, three hundred twenty".