40216215 has 16 divisors (see below), whose sum is σ = 69295968. Its totient is φ = 19798656.

The previous prime is 40216193. The next prime is 40216219. The reversal of 40216215 is 51261204.

It is not a de Polignac number, because 40216215 - 2⁷ = 40216087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40216191 and 40216200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40216219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102924 + ... + 103313.

It is an arithmetic number, because the mean of its divisors is an integer number (4330998).

Almost surely, 2^40216215 is an apocalyptic number.

40216215 is a deficient number, since it is larger than the sum of its proper divisors (29079753).

40216215 is a wasteful number, since it uses less digits than its factorization.

40216215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206258.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 40216215 is about 6341.6255802436. The cubic root of 40216215 is about 342.6102864683.

Adding to 40216215 its reverse (51261204), we get a palindrome (91477419).

The spelling of 40216215 in words is "forty million, two hundred sixteen thousand, two hundred fifteen".