287080491 has 12 divisors (see below), whose sum is σ = 395523816. Its totient is φ = 185211360.

The previous prime is 287080471. The next prime is 287080499. The reversal of 287080491 is 194080782.

It is not a de Polignac number, because 287080491 - 2⁷ = 287080363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (287080499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46906 + ... + 52671.

It is an arithmetic number, because the mean of its divisors is an integer number (32960318).

Almost surely, 2^287080491 is an apocalyptic number.

287080491 is a deficient number, since it is larger than the sum of its proper divisors (108443325).

287080491 is an equidigital number, since it uses as much as digits as its factorization.

287080491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99642 (or 99611 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 287080491 is about 16943.4497963077. The cubic root of 287080491 is about 659.6818875613.

The spelling of 287080491 in words is "two hundred eighty-seven million, eighty thousand, four hundred ninety-one".