274228505 has 4 divisors (see below), whose sum is σ = 329074212. Its totient is φ = 219382800.

The previous prime is 274228499. The next prime is 274228561. The reversal of 274228505 is 505822472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60016009 + 214212496 = 7747^2 + 14636^2 .

It is not a de Polignac number, because 274228505 - 2⁸ = 274228249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27422846 + ... + 27422855.

It is an arithmetic number, because the mean of its divisors is an integer number (82268553).

Almost surely, 2^274228505 is an apocalyptic number.

It is an amenable number.

274228505 is a deficient number, since it is larger than the sum of its proper divisors (54845707).

274228505 is an equidigital number, since it uses as much as digits as its factorization.

274228505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54845706.

The product of its (nonzero) digits is 44800, while the sum is 35.

The square root of 274228505 is about 16559.8461647444. The cubic root of 274228505 is about 649.6870327662.

The spelling of 274228505 in words is "two hundred seventy-four million, two hundred twenty-eight thousand, five hundred five".