215005000 has 80 divisors (see below), whose sum is σ = 575815680. Its totient is φ = 73704000.

The previous prime is 215004961. The next prime is 215005003. The reversal of 215005000 is 500512.

It is not an unprimeable number, because it can be changed into a prime (215005003) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 31929 + ... + 38071.

It is an arithmetic number, because the mean of its divisors is an integer number (7197696).

Almost surely, 2^215005000 is an apocalyptic number.

215005000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215005000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287907840).

215005000 is an abundant number, since it is smaller than the sum of its proper divisors (360810680).

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

215005000 is an equidigital number, since it uses as much as digits as its factorization.

215005000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6176 (or 6157 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 215005000 is about 14663.0487962088. The cubic root of 215005000 is about 599.0772854275.

Adding to 215005000 its reverse (500512), we get a palindrome (215505512).

The spelling of 215005000 in words is "two hundred fifteen million, five thousand".