40821596728 has 48 divisors (see below), whose sum is σ = 84736827000. Its totient is φ = 18421719360.

The previous prime is 40821596663. The next prime is 40821596747. The reversal of 40821596728 is 82769512804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17143 + ... + 286246.

Almost surely, 2^40821596728 is an apocalyptic number.

It is an amenable number.

40821596728 is an abundant number, since it is smaller than the sum of its proper divisors (43915230272).

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

40821596728 is a wasteful number, since it uses less digits than its factorization.

40821596728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303556 (or 303541 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 40821596728 in words is "forty billion, eight hundred twenty-one million, five hundred ninety-six thousand, seven hundred twenty-eight".