40971216 has 160 divisors (see below), whose sum is σ = 127991808. Its totient is φ = 11128320.

The previous prime is 40971187. The next prime is 40971221. The reversal of 40971216 is 61217904.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 322545 + ... + 322671.

Almost surely, 2^40971216 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 40971216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63995904).

40971216 is an abundant number, since it is smaller than the sum of its proper divisors (87020592).

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

40971216 is a wasteful number, since it uses less digits than its factorization.

40971216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 40971216 is about 6400.8761900227. The cubic root of 40971216 is about 344.7410112569.

The spelling of 40971216 in words is "forty million, nine hundred seventy-one thousand, two hundred sixteen".