215126272 has 36 divisors (see below), whose sum is σ = 436721040. Its totient is φ = 105732608.

The previous prime is 215126257. The next prime is 215126281. The reversal of 215126272 is 272621512.

It is a self number, because there is not a number n which added to its sum of digits gives 215126272.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7983 + ... + 22225.

It is an arithmetic number, because the mean of its divisors is an integer number (12131140).

Almost surely, 2^215126272 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 215126272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218360520).

215126272 is an abundant number, since it is smaller than the sum of its proper divisors (221594768).

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

215126272 is an equidigital number, since it uses as much as digits as its factorization.

215126272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14318 (or 14304 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 215126272 is about 14667.1835060451. The cubic root of 215126272 is about 599.1898993130.

Adding to 215126272 its reverse (272621512), we get a palindrome (487747784).

The spelling of 215126272 in words is "two hundred fifteen million, one hundred twenty-six thousand, two hundred seventy-two".