40821696 has 84 divisors (see below), whose sum is σ = 118119144. Its totient is φ = 13478400.

The previous prime is 40821667. The next prime is 40821701. The reversal of 40821696 is 69612804.

40821696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40821696.

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 11 ways as a sum of consecutive naturals, for example, 75186 + ... + 75726.

Almost surely, 2^40821696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40821696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59059572).

40821696 is an abundant number, since it is smaller than the sum of its proper divisors (77297448).

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

40821696 is a wasteful number, since it uses less digits than its factorization.

40821696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 40821696 is about 6389.1858636293. The cubic root of 40821696 is about 344.3211351266.

It can be divided in two parts, 4082 and 1696, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 40821696 in words is "forty million, eight hundred twenty-one thousand, six hundred ninety-six".