275328648 has 72 divisors (see below), whose sum is σ = 867436830. Its totient is φ = 78664320.

The previous prime is 275328593. The next prime is 275328649. The reversal of 275328648 is 846823572.

It can be written as a sum of positive squares in only one way, i.e., 266930244 + 8398404 = 16338^2 + 2898^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (275328649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35493 + ... + 42548.

Almost surely, 2^275328648 is an apocalyptic number.

275328648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

275328648 is an abundant number, since it is smaller than the sum of its proper divisors (592108182).

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

275328648 is a wasteful number, since it uses less digits than its factorization.

275328648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78067 (or 78053 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 275328648 is about 16593.0301030282. The cubic root of 275328648 is about 650.5546728903.

The spelling of 275328648 in words is "two hundred seventy-five million, three hundred twenty-eight thousand, six hundred forty-eight".