273401649 has 10 divisors (see below), whose sum is σ = 408414930. Its totient is φ = 182267712.

The previous prime is 273401627. The next prime is 273401651. The reversal of 273401649 is 946104372.

273401649 is a `hidden beast` number, since 2 + 7 + 3 + 4 + 0 + 1 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 250905600 + 22496049 = 15840^2 + 4743^2 .

It is not a de Polignac number, because 273401649 - 2⁹ = 273401137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273401669) 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 9 ways as a sum of consecutive naturals, for example, 1687584 + ... + 1687745.

It is an arithmetic number, because the mean of its divisors is an integer number (40841493).

Almost surely, 2^273401649 is an apocalyptic number.

It is an amenable number.

273401649 is a deficient number, since it is larger than the sum of its proper divisors (135013281).

273401649 is an equidigital number, since it uses as much as digits as its factorization.

273401649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3375341 (or 3375332 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 273401649 is about 16534.8616262731. The cubic root of 273401649 is about 649.0333948468.

The spelling of 273401649 in words is "two hundred seventy-three million, four hundred one thousand, six hundred forty-nine".