40800020 has 24 divisors (see below), whose sum is σ = 86360064. Its totient is φ = 16190496.

The previous prime is 40799989. The next prime is 40800073. The reversal of 40800020 is 2000804.

40800020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40799968 and 40800004.

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 7 ways as a sum of consecutive naturals, for example, 5492 + ... + 10571.

It is an arithmetic number, because the mean of its divisors is an integer number (3598336).

Almost surely, 2^40800020 is an apocalyptic number.

It is an amenable number.

40800020 is an abundant number, since it is smaller than the sum of its proper divisors (45560044).

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

40800020 is a wasteful number, since it uses less digits than its factorization.

40800020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16199 (or 16197 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40800020 is about 6387.4893346291. The cubic root of 40800020 is about 344.2601803969.

Adding to 40800020 its reverse (2000804), we get a palindrome (42800824).

The spelling of 40800020 in words is "forty million, eight hundred thousand, twenty".