287445248 has 54 divisors (see below), whose sum is σ = 609891786. Its totient is φ = 134742016.

The previous prime is 287445247. The next prime is 287445251. The reversal of 287445248 is 842544782.

It can be written as a sum of positive squares in 3 ways, for example, as 249892864 + 37552384 = 15808^2 + 6128^2 .

It is a zygodrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 287445199 and 287445208.

It is not an unprimeable number, because it can be changed into a prime (287445247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1118336 + ... + 1118592.

Almost surely, 2^287445248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287445248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304945893).

287445248 is an abundant number, since it is smaller than the sum of its proper divisors (322446538).

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

287445248 is an frugal number, since it uses more digits than its factorization.

287445248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 276 counting only the distinct ones).

The product of its digits is 573440, while the sum is 44.

The square root of 287445248 is about 16954.2103325398. The cubic root of 287445248 is about 659.9611608611.

The spelling of 287445248 in words is "two hundred eighty-seven million, four hundred forty-five thousand, two hundred forty-eight".