273280642 has 4 divisors (see below), whose sum is σ = 409920966. Its totient is φ = 136640320.

The previous prime is 273280583. The next prime is 273280643. The reversal of 273280642 is 246082372.

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

It can be written as a sum of positive squares in only one way, i.e., 246458601 + 26822041 = 15699^2 + 5179^2 .

It is a junction number, because it is equal to n+sod(n) for n = 273280598 and 273280607.

It is not an unprimeable number, because it can be changed into a prime (273280643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68320159 + ... + 68320162.

Almost surely, 2^273280642 is an apocalyptic number.

273280642 is a deficient number, since it is larger than the sum of its proper divisors (136640324).

273280642 is a wasteful number, since it uses less digits than its factorization.

273280642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136640323.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 273280642 is about 16531.2020736545. The cubic root of 273280642 is about 648.9376271073.

The spelling of 273280642 in words is "two hundred seventy-three million, two hundred eighty thousand, six hundred forty-two".