287673121 has 4 divisors (see below), whose sum is σ = 300180672. Its totient is φ = 275165572.

The previous prime is 287673109. The next prime is 287673137. The reversal of 287673121 is 121376782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 287673121 - 2¹⁷ = 287542049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287673101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6253741 + ... + 6253786.

It is an arithmetic number, because the mean of its divisors is an integer number (75045168).

Almost surely, 2^287673121 is an apocalyptic number.

It is an amenable number.

287673121 is a deficient number, since it is larger than the sum of its proper divisors (12507551).

287673121 is a wasteful number, since it uses less digits than its factorization.

287673121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12507550.

The product of its digits is 28224, while the sum is 37.

The square root of 287673121 is about 16960.9292493071. The cubic root of 287673121 is about 660.1355101307.

The spelling of 287673121 in words is "two hundred eighty-seven million, six hundred seventy-three thousand, one hundred twenty-one".