275091968 has 30 divisors (see below), whose sum is σ = 550397529. Its totient is φ = 137358336.

The previous prime is 275091967. The next prime is 275091979. The reversal of 275091968 is 869190572.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 177635584 + 97456384 = 13328^2 + 9872^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=11728.

It is a super-2 number, since 2×275091968² = 151351181716226048, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (275091961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 374930 + ... + 375662.

Almost surely, 2^275091968 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 275091968

275091968 is an abundant number, since it is smaller than the sum of its proper divisors (275305561).

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

275091968 is an frugal number, since it uses more digits than its factorization.

275091968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484 (or 735 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 275091968 is about 16585.8966595117. The cubic root of 275091968 is about 650.3682079485.

The spelling of 275091968 in words is "two hundred seventy-five million, ninety-one thousand, nine hundred sixty-eight".