215030016 has 54 divisors (see below), whose sum is σ = 619991190. Its totient is φ = 71675904.

The previous prime is 215030003. The next prime is 215030017. The reversal of 215030016 is 610030512.

It can be written as a sum of positive squares in only one way, i.e., 161798400 + 53231616 = 12720^2 + 7296^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (215030017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44361 + ... + 48968.

Almost surely, 2^215030016 is an apocalyptic number.

It is an amenable number.

215030016 is an abundant number, since it is smaller than the sum of its proper divisors (404961174).

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

215030016 is an equidigital number, since it uses as much as digits as its factorization.

215030016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93351 (or 93334 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 215030016 is about 14663.9017999985. The cubic root of 215030016 is about 599.1005188967.

Adding to 215030016 its reverse (610030512), we get a palindrome (825060528).

The spelling of 215030016 in words is "two hundred fifteen million, thirty thousand, sixteen".