274728 has 16 divisors (see below), whose sum is σ = 686880. Its totient is φ = 91568.

The previous prime is 274723. The next prime is 274739. The reversal of 274728 is 827472.

It is a junction number, because it is equal to n+sod(n) for n = 274695 and 274704.

It is not an unprimeable number, because it can be changed into a prime (274723) by changing a digit.

274728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5700 + ... + 5747.

It is an arithmetic number, because the mean of its divisors is an integer number (42930).

2²⁷⁴⁷²⁸ is an apocalyptic number.

It is an amenable number.

274728 is an abundant number, since it is smaller than the sum of its proper divisors (412152).

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

274728 is a wasteful number, since it uses less digits than its factorization.

274728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11456 (or 11452 counting only the distinct ones).

The product of its digits is 6272, while the sum is 30.

The square root of 274728 is about 524.1450181009. The cubic root of 274728 is about 65.0081252170.

It can be divided in two parts, 2747 and 28, that added together give a triangular number (2775 = T₇₄).

The spelling of 274728 in words is "two hundred seventy-four thousand, seven hundred twenty-eight".