215338648 has 64 divisors (see below), whose sum is σ = 479877120. Its totient is φ = 88646400.

The previous prime is 215338639. The next prime is 215338649. The reversal of 215338648 is 846833512.

It is a self number, because there is not a number n which added to its sum of digits gives 215338648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215338649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282588 + ... + 283348.

It is an arithmetic number, because the mean of its divisors is an integer number (7498080).

Almost surely, 2^215338648 is an apocalyptic number.

215338648 is a gapful number since it is divisible by the number (28) 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 215338648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239938560).

215338648 is an abundant number, since it is smaller than the sum of its proper divisors (264538472).

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

215338648 is a wasteful number, since it uses less digits than its factorization.

215338648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 964 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 215338648 is about 14674.4215558911. The cubic root of 215338648 is about 599.3870109911.

The spelling of 215338648 in words is "two hundred fifteen million, three hundred thirty-eight thousand, six hundred forty-eight".