287982380 has 48 divisors (see below), whose sum is σ = 731820096. Its totient is φ = 92928000.

The previous prime is 287982377. The next prime is 287982389. The reversal of 287982380 is 83289782.

It is not an unprimeable number, because it can be changed into a prime (287982389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58121 + ... + 62880.

It is an arithmetic number, because the mean of its divisors is an integer number (15246252).

Almost surely, 2^287982380 is an apocalyptic number.

287982380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

287982380 is an abundant number, since it is smaller than the sum of its proper divisors (443837716).

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

287982380 is a wasteful number, since it uses less digits than its factorization.

287982380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121034 (or 121032 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 287982380 is about 16970.0436063081. The cubic root of 287982380 is about 660.3719819214.

The spelling of 287982380 in words is "two hundred eighty-seven million, nine hundred eighty-two thousand, three hundred eighty".