275780349 has 64 divisors (see below), whose sum is σ = 457497600. Its totient is φ = 163109376.

The previous prime is 275780339. The next prime is 275780357. The reversal of 275780349 is 943087572.

It is not a de Polignac number, because 275780349 - 2⁴ = 275780333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275780339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1204167 + ... + 1204395.

It is an arithmetic number, because the mean of its divisors is an integer number (7148400).

Almost surely, 2^275780349 is an apocalyptic number.

It is an amenable number.

275780349 is a deficient number, since it is larger than the sum of its proper divisors (181717251).

275780349 is a wasteful number, since it uses less digits than its factorization.

275780349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 275780349 is about 16606.6356917950. The cubic root of 275780349 is about 650.9102426741.

The spelling of 275780349 in words is "two hundred seventy-five million, seven hundred eighty thousand, three hundred forty-nine".