40909203828 has 36 divisors (see below), whose sum is σ = 107905438368. Its totient is φ = 13043514000.

The previous prime is 40909203827. The next prime is 40909203833. The reversal of 40909203828 is 82830290904.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40909203821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24702798 + ... + 24704453.

It is an arithmetic number, because the mean of its divisors is an integer number (2997373288).

Almost surely, 2^40909203828 is an apocalyptic number.

It is an amenable number.

40909203828 is an abundant number, since it is smaller than the sum of its proper divisors (66996234540).

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

40909203828 is a wasteful number, since it uses less digits than its factorization.

40909203828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49407284 (or 49407279 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 40909203828 in words is "forty billion, nine hundred nine million, two hundred three thousand, eight hundred twenty-eight".