215450512 has 40 divisors (see below), whose sum is σ = 440027640. Its totient is φ = 102036480.

The previous prime is 215450489. The next prime is 215450549. The reversal of 215450512 is 215054512.

It can be written as a sum of positive squares in 4 ways, for example, as 15397776 + 200052736 = 3924^2 + 14144^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20212 + ... + 28972.

It is an arithmetic number, because the mean of its divisors is an integer number (11000691).

Almost surely, 2^215450512 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 215450512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220013820).

215450512 is an abundant number, since it is smaller than the sum of its proper divisors (224577128).

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

215450512 is a wasteful number, since it uses less digits than its factorization.

215450512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851 (or 8845 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 215450512 is about 14678.2325911535. The cubic root of 215450512 is about 599.4907827668.

The spelling of 215450512 in words is "two hundred fifteen million, four hundred fifty thousand, five hundred twelve".