287952380408 has 96 divisors (see below), whose sum is σ = 686996426160. Its totient is φ = 111887838720.

The previous prime is 287952380407. The next prime is 287952380413. The reversal of 287952380408 is 804083259782.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287952380407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1518860 + ... + 1697892.

Almost surely, 2^287952380408 is an apocalyptic number.

287952380408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287952380408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343498213080).

287952380408 is an abundant number, since it is smaller than the sum of its proper divisors (399044045752).

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

287952380408 is a wasteful number, since it uses less digits than its factorization.

287952380408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179437 (or 179426 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 287952380408 in words is "two hundred eighty-seven billion, nine hundred fifty-two million, three hundred eighty thousand, four hundred eight".