274991644 has 12 divisors (see below), whose sum is σ = 481355784. Its totient is φ = 137461424.

The previous prime is 274991641. The next prime is 274991681. The reversal of 274991644 is 446199472.

It is a junction number, because it is equal to n+sod(n) for n = 274991594 and 274991603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274991641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19827 + ... + 30709.

It is an arithmetic number, because the mean of its divisors is an integer number (40112982).

Almost surely, 2^274991644 is an apocalyptic number.

It is an amenable number.

274991644 is a deficient number, since it is larger than the sum of its proper divisors (206364140).

274991644 is a wasteful number, since it uses less digits than its factorization.

274991644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17204 (or 17202 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 274991644 is about 16582.8720069836. The cubic root of 274991644 is about 650.2891368486.

The spelling of 274991644 in words is "two hundred seventy-four million, nine hundred ninety-one thousand, six hundred forty-four".