273405568 has 32 divisors (see below), whose sum is σ = 547730820. Its totient is φ = 135936000.

The previous prime is 273405551. The next prime is 273405581. The reversal of 273405568 is 865504372.

It can be written as a sum of positive squares in 2 ways, for example, as 245611584 + 27793984 = 15672^2 + 5272^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×273405568² = 149501209226805248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 273405568.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17268 + ... + 29068.

Almost surely, 2^273405568 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 273405568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273865410).

273405568 is an abundant number, since it is smaller than the sum of its proper divisors (274325252).

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

273405568 is a wasteful number, since it uses less digits than its factorization.

273405568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11996 (or 11984 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 273405568 is about 16534.9801330392. The cubic root of 273405568 is about 649.0364959617.

The spelling of 273405568 in words is "two hundred seventy-three million, four hundred five thousand, five hundred sixty-eight".