287383872 has 28 divisors (see below), whose sum is σ = 760370336. Its totient is φ = 95794560.

The previous prime is 287383853. The next prime is 287383879. The reversal of 287383872 is 278383782.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287383879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748204 + ... + 748587.

Almost surely, 2^287383872 is an apocalyptic number.

It is an amenable number.

287383872 is an abundant number, since it is smaller than the sum of its proper divisors (472986464).

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

287383872 is a wasteful number, since it uses less digits than its factorization.

287383872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496806 (or 1496796 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 287383872 is about 16952.4001840447. The cubic root of 287383872 is about 659.9141853532.

The spelling of 287383872 in words is "two hundred eighty-seven million, three hundred eighty-three thousand, eight hundred seventy-two".