272978 has 8 divisors (see below), whose sum is σ = 419580. Its totient is φ = 133120.

The previous prime is 272971. The next prime is 272981. The reversal of 272978 is 879272.

It can be written as a sum of positive squares in 2 ways, for example, as 243049 + 29929 = 493^2 + 173^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272971) by changing a digit.

272978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583 + ... + 1746.

2²⁷²⁹⁷⁸ is an apocalyptic number.

272978 is a deficient number, since it is larger than the sum of its proper divisors (146602).

272978 is a wasteful number, since it uses less digits than its factorization.

272978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its digits is 14112, while the sum is 35.

The square root of 272978 is about 522.4729658078. The cubic root of 272978 is about 64.8697985393.

The spelling of 272978 in words is "two hundred seventy-two thousand, nine hundred seventy-eight".