215416216 has 16 divisors (see below), whose sum is σ = 405720000. Its totient is φ = 107224224.

The previous prime is 215416177. The next prime is 215416217. The reversal of 215416216 is 612614512.

It is a super-2 number, since 2×215416216² = 92808292231517312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215416217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58591 + ... + 62158.

It is an arithmetic number, because the mean of its divisors is an integer number (25357500).

Almost surely, 2^215416216 is an apocalyptic number.

It is an amenable number.

215416216 is a deficient number, since it is larger than the sum of its proper divisors (190303784).

215416216 is a wasteful number, since it uses less digits than its factorization.

215416216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120978 (or 120974 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 215416216 is about 14677.0642841135. The cubic root of 215416216 is about 599.4589715529.

The spelling of 215416216 in words is "two hundred fifteen million, four hundred sixteen thousand, two hundred sixteen".