273340821 has 16 divisors (see below), whose sum is σ = 413147840. Its totient is φ = 159356160.

The previous prime is 273340819. The next prime is 273340843. The reversal of 273340821 is 128043372.

It is not a de Polignac number, because 273340821 - 2¹ = 273340819 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273340021) 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 15 ways as a sum of consecutive naturals, for example, 183700 + ... + 185181.

It is an arithmetic number, because the mean of its divisors is an integer number (25821740).

Almost surely, 2^273340821 is an apocalyptic number.

It is an amenable number.

273340821 is a deficient number, since it is larger than the sum of its proper divisors (139807019).

273340821 is a wasteful number, since it uses less digits than its factorization.

273340821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368916.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 273340821 is about 16533.0221375283. The cubic root of 273340821 is about 648.9852576932.

The spelling of 273340821 in words is "two hundred seventy-three million, three hundred forty thousand, eight hundred twenty-one".