287028481 has 8 divisors (see below), whose sum is σ = 291395720. Its totient is φ = 282673152.

The previous prime is 287028479. The next prime is 287028487. The reversal of 287028481 is 184820782.

It can be written as a sum of positive squares in 4 ways, for example, as 234256 + 286794225 = 484^2 + 16935^2 .

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 287028481 - 2¹ = 287028479 is a prime.

It is a super-2 number, since 2×287028481² = 164770697810334722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287028487) 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, 53581 + ... + 58693.

It is an arithmetic number, because the mean of its divisors is an integer number (36424465).

Almost surely, 2^287028481 is an apocalyptic number.

It is an amenable number.

287028481 is a deficient number, since it is larger than the sum of its proper divisors (4367239).

287028481 is an equidigital number, since it uses as much as digits as its factorization.

287028481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955.

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 287028481 is about 16941.9149153807. The cubic root of 287028481 is about 659.6420472514.

The spelling of 287028481 in words is "two hundred eighty-seven million, twenty-eight thousand, four hundred eighty-one".