287675381 has 8 divisors (see below), whose sum is σ = 339377664. Its totient is φ = 238624560.

The previous prime is 287675351. The next prime is 287675417. The reversal of 287675381 is 183576782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 287675381 - 2¹⁴ = 287658997 is a prime.

It is a super-2 number, since 2×287675381² = 165514249666990322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287675321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662630 + ... + 663063.

It is an arithmetic number, because the mean of its divisors is an integer number (42422208).

Almost surely, 2^287675381 is an apocalyptic number.

It is an amenable number.

287675381 is a deficient number, since it is larger than the sum of its proper divisors (51702283).

287675381 is a wasteful number, since it uses less digits than its factorization.

287675381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325731.

The product of its digits is 564480, while the sum is 47.

The square root of 287675381 is about 16960.9958728844. The cubic root of 287675381 is about 660.1372388316.

The spelling of 287675381 in words is "two hundred eighty-seven million, six hundred seventy-five thousand, three hundred eighty-one".