287488460 has 36 divisors (see below), whose sum is σ = 690454128. Its totient is φ = 98498688.

The previous prime is 287488457. The next prime is 287488501. The reversal of 287488460 is 64884782.

It is a happy number.

It is a super-2 number, since 2×287488460² = 165299229266343200, which contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 199904 + ... + 201336.

Almost surely, 2^287488460 is an apocalyptic number.

287488460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287488460 is an abundant number, since it is smaller than the sum of its proper divisors (402965668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287488460 is an equidigital number, since it uses as much as digits as its factorization.

287488460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The square root of 287488460 is about 16955.4846583635. The cubic root of 287488460 is about 659.9942301302.

The spelling of 287488460 in words is "two hundred eighty-seven million, four hundred eighty-eight thousand, four hundred sixty".