287260161 has 8 divisors (see below), whose sum is σ = 383189760. Its totient is φ = 191418672.

The previous prime is 287260153. The next prime is 287260187. The reversal of 287260161 is 161062782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287260161 - 2³ = 287260153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287260121) 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 7 ways as a sum of consecutive naturals, for example, 14001 + ... + 27758.

It is an arithmetic number, because the mean of its divisors is an integer number (47898720).

Almost surely, 2^287260161 is an apocalyptic number.

It is an amenable number.

287260161 is a deficient number, since it is larger than the sum of its proper divisors (95929599).

287260161 is a wasteful number, since it uses less digits than its factorization.

287260161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44055.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 287260161 is about 16948.7510159303. The cubic root of 287260161 is about 659.8194800143.

The spelling of 287260161 in words is "two hundred eighty-seven million, two hundred sixty thousand, one hundred sixty-one".