40216008 has 128 divisors (see below), whose sum is σ = 124185600. Its totient is φ = 10596096.

The previous prime is 40215997. The next prime is 40216031. The reversal of 40216008 is 80061204.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 137110 + ... + 137402.

It is an arithmetic number, because the mean of its divisors is an integer number (970200).

Almost surely, 2^40216008 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 40216008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62092800).

40216008 is an abundant number, since it is smaller than the sum of its proper divisors (83969592).

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

40216008 is a wasteful number, since it uses less digits than its factorization.

40216008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 40216008 is about 6341.6092594861. The cubic root of 40216008 is about 342.6096986420.

The spelling of 40216008 in words is "forty million, two hundred sixteen thousand, eight".