287864148 has 96 divisors (see below), whose sum is σ = 793658880. Its totient is φ = 80058240.

The previous prime is 287864123. The next prime is 287864149. The reversal of 287864148 is 841468782.

It is a junction number, because it is equal to n+sod(n) for n = 287864097 and 287864106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287864149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389163 + ... + 389901.

It is an arithmetic number, because the mean of its divisors is an integer number (8267280).

Almost surely, 2^287864148 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 287864148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (396829440).

287864148 is an abundant number, since it is smaller than the sum of its proper divisors (505794732).

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

287864148 is a wasteful number, since it uses less digits than its factorization.

287864148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 995 counting only the distinct ones).

The product of its digits is 688128, while the sum is 48.

The square root of 287864148 is about 16966.5596984185. The cubic root of 287864148 is about 660.2815970078.

The spelling of 287864148 in words is "two hundred eighty-seven million, eight hundred sixty-four thousand, one hundred forty-eight".