40216305 has 32 divisors (see below), whose sum is σ = 71103744. Its totient is φ = 19306496.

The previous prime is 40216289. The next prime is 40216321. The reversal of 40216305 is 50361204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40216289) and next prime (40216321).

It is a cyclic number.

It is not a de Polignac number, because 40216305 - 2⁴ = 40216289 is a prime.

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, 2437 + ... + 9293.

It is an arithmetic number, because the mean of its divisors is an integer number (2221992).

Almost surely, 2^40216305 is an apocalyptic number.

It is an amenable number.

40216305 is a deficient number, since it is larger than the sum of its proper divisors (30887439).

40216305 is a wasteful number, since it uses less digits than its factorization.

40216305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40216305 is about 6341.6326762120. The cubic root of 40216305 is about 342.6105420443.

Adding to 40216305 its reverse (50361204), we get a palindrome (90577509).

The spelling of 40216305 in words is "forty million, two hundred sixteen thousand, three hundred five".