273691872 has 144 divisors (see below), whose sum is σ = 821791152. Its totient is φ = 89579520.

The previous prime is 273691871. The next prime is 273691877. The reversal of 273691872 is 278196372.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273691871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 474048 + ... + 474624.

It is an arithmetic number, because the mean of its divisors is an integer number (5706883).

Almost surely, 2^273691872 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 273691872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410895576).

273691872 is an abundant number, since it is smaller than the sum of its proper divisors (548099280).

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

273691872 is an equidigital number, since it uses as much as digits as its factorization.

273691872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663 (or 643 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 273691872 is about 16543.6353925006. The cubic root of 273691872 is about 649.2629689401.

It can be divided in two parts, 27369 and 1872, that added together give a square (29241 = 171²).

The spelling of 273691872 in words is "two hundred seventy-three million, six hundred ninety-one thousand, eight hundred seventy-two".