40320216 has 48 divisors (see below), whose sum is σ = 109675800. Its totient is φ = 13381632.

The previous prime is 40320211. The next prime is 40320221. The reversal of 40320216 is 61202304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40320211) and next prime (40320221).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40320211) 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, 17415 + ... + 19593.

Almost surely, 2^40320216 is an apocalyptic number.

It is an amenable number.

40320216 is an abundant number, since it is smaller than the sum of its proper divisors (69355584).

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

40320216 is a wasteful number, since it uses less digits than its factorization.

40320216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448 (or 2441 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40320216 is about 6349.8201549335. The cubic root of 40320216 is about 342.9053676214.

The spelling of 40320216 in words is "forty million, three hundred twenty thousand, two hundred sixteen".