274978 has 16 divisors (see below), whose sum is σ = 466560. Its totient is φ = 120400.

The previous prime is 274973. The next prime is 274993. The reversal of 274978 is 879472.

It is a happy number.

It is a super-2 number, since 2×274978² = 151225800968, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274973) by changing a digit.

274978 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 7 ways as a sum of consecutive naturals, for example, 423 + ... + 853.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2²⁷⁴⁹⁷⁸ is an apocalyptic number.

274978 is a deficient number, since it is larger than the sum of its proper divisors (191582).

274978 is a wasteful number, since it uses less digits than its factorization.

274978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473.

The product of its digits is 28224, while the sum is 37.

The square root of 274978 is about 524.3834474886. The cubic root of 274978 is about 65.0278381744.

It can be divided in two parts, 27 and 4978, that added together give a palindrome (5005).

The spelling of 274978 in words is "two hundred seventy-four thousand, nine hundred seventy-eight".