40021716 has 96 divisors (see below), whose sum is σ = 111677440. Its totient is φ = 10917504.

The previous prime is 40021703. The next prime is 40021727. The reversal of 40021716 is 61712004.

40021716 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 (21).

It is a junction number, because it is equal to n+sod(n) for n = 40021692 and 40021701.

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 31 ways as a sum of consecutive naturals, for example, 245451 + ... + 245613.

Almost surely, 2^40021716 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 40021716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55838720).

40021716 is an abundant number, since it is smaller than the sum of its proper divisors (71655724).

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

40021716 is a wasteful number, since it uses less digits than its factorization.

40021716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 40021716 is about 6326.2718879289. The cubic root of 40021716 is about 342.0570678682.

The spelling of 40021716 in words is "forty million, twenty-one thousand, seven hundred sixteen".