40437216 has 36 divisors (see below), whose sum is σ = 114994152. Its totient is φ = 13478976.

The previous prime is 40437191. The next prime is 40437217. The reversal of 40437216 is 61273404.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40437216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40437217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69916 + ... + 70491.

It is an arithmetic number, because the mean of its divisors is an integer number (3194282).

Almost surely, 2^40437216 is an apocalyptic number.

It is an amenable number.

40437216 is an abundant number, since it is smaller than the sum of its proper divisors (74556936).

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

40437216 is a wasteful number, since it uses less digits than its factorization.

40437216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140423 (or 140412 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40437216 is about 6359.0263405650. The cubic root of 40437216 is about 343.2367248424.

The spelling of 40437216 in words is "forty million, four hundred thirty-seven thousand, two hundred sixteen".