274 can be written using four 4's:
See also 113
274 has 4
divisors (see below), whose sum is σ = 414
Its totient is φ = 136
The previous prime is 271. The next prime is 277. The reversal of 274 is 472.
274 = T12 + T13 +
274 is nontrivially palindromic in base 13.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (271) and next prime (277).
It can be written as a sum of positive squares in only one way, i.e., 225 + 49 = 15^2 + 7^2
It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a tribonacci number.
It is an alternating number because its digits alternate between even and odd.
274 is an undulating number in base 13.
It is a plaindrome in base 6, base 9, base 11, base 12, base 14, base 15 and base 16.
It is a nialpdrome in base 7 and base 8.
It is not an unprimeable number, because it can be changed into a prime (271) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (3) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67 + ... + 70.
274 is the 14-th centered triangular number.
274 is a deficient number, since it is larger than the sum of its proper divisors (140).
274 is a wasteful number, since it uses less digits than its factorization.
274 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 139.
The product of its digits is 56, while the sum is 13.
The square root of 274 is about 16.5529453572.
The cubic root of 274 is about 6.4950652881.
The spelling of 274 in words is "two hundred seventy-four", and thus it is an aban number and an iban number.