215132416 has 36 divisors (see below), whose sum is σ = 454693932. Its totient is φ = 101236736.

The previous prime is 215132341. The next prime is 215132419. The reversal of 215132416 is 614231512.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 156150016 + 58982400 = 12496^2 + 7680^2 .

It is not an unprimeable number, because it can be changed into a prime (215132419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20365 + ... + 29068.

It is an arithmetic number, because the mean of its divisors is an integer number (12630387).

Almost surely, 2^215132416 is an apocalyptic number.

It is an amenable number.

215132416 is an abundant number, since it is smaller than the sum of its proper divisors (239561516).

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

215132416 is an equidigital number, since it uses as much as digits as its factorization.

215132416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49466 (or 49452 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 215132416 is about 14667.3929517144. The cubic root of 215132416 is about 599.1956035406.

Adding to 215132416 its reverse (614231512), we get a palindrome (829363928).

The spelling of 215132416 in words is "two hundred fifteen million, one hundred thirty-two thousand, four hundred sixteen".