272804805 has 144 divisors (see below), whose sum is σ = 613476864. Its totient is φ = 111041280.

The previous prime is 272804803. The next prime is 272804809. The reversal of 272804805 is 508408272.

It is a happy number.

It is not a de Polignac number, because 272804805 - 2¹ = 272804803 is a prime.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 272804805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272804801) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 888462 + ... + 888768.

It is an arithmetic number, because the mean of its divisors is an integer number (4260256).

Almost surely, 2^272804805 is an apocalyptic number.

It is an amenable number.

272804805 is an abundant number, since it is smaller than the sum of its proper divisors (340672059).

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

272804805 is a wasteful number, since it uses less digits than its factorization.

272804805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 272804805 is about 16516.8037162158. The cubic root of 272804805 is about 648.5607643017.

The spelling of 272804805 in words is "two hundred seventy-two million, eight hundred four thousand, eight hundred five".