287472889 has 24 divisors (see below), whose sum is σ = 328801536. Its totient is φ = 250879200.

The previous prime is 287472881. The next prime is 287472917. The reversal of 287472889 is 988274782.

It is not a de Polignac number, because 287472889 - 2³ = 287472881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (287472881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648702 + ... + 649144.

It is an arithmetic number, because the mean of its divisors is an integer number (13700064).

Almost surely, 2^287472889 is an apocalyptic number.

It is an amenable number.

287472889 is a deficient number, since it is larger than the sum of its proper divisors (41328647).

287472889 is a wasteful number, since it uses less digits than its factorization.

287472889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669 (or 658 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 55.

The square root of 287472889 is about 16955.0254791905. The cubic root of 287472889 is about 659.9823143409.

The spelling of 287472889 in words is "two hundred eighty-seven million, four hundred seventy-two thousand, eight hundred eighty-nine".