215344272 has 160 divisors (see below), whose sum is σ = 661207680. Its totient is φ = 59535360.

The previous prime is 215344249. The next prime is 215344273. The reversal of 215344272 is 272443512.

It is not an unprimeable number, because it can be changed into a prime (215344273) 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 31 ways as a sum of consecutive naturals, for example, 940254 + ... + 940482.

It is an arithmetic number, because the mean of its divisors is an integer number (4132548).

Almost surely, 2^215344272 is an apocalyptic number.

215344272 is a gapful number since it is divisible by the number (22) 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 215344272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330603840).

215344272 is an abundant number, since it is smaller than the sum of its proper divisors (445863408).

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

215344272 is a wasteful number, since it uses less digits than its factorization.

215344272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 395 counting only the distinct ones).

The product of its digits is 13440, while the sum is 30.

The square root of 215344272 is about 14674.6131805918. The cubic root of 215344272 is about 599.3922290097.

Adding to 215344272 its reverse (272443512), we get a palindrome (487787784).

The spelling of 215344272 in words is "two hundred fifteen million, three hundred forty-four thousand, two hundred seventy-two".