287172480 has 256 divisors, whose sum is σ = 1092787200. Its totient is φ = 62717952.

The previous prime is 287172451. The next prime is 287172481. The reversal of 287172480 is 84271782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287172481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308656 + ... + 309584.

It is an arithmetic number, because the mean of its divisors is an integer number (4268700).

Almost surely, 2^287172480 is an apocalyptic number.

287172480 is a gapful number since it is divisible by the number (20) 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 287172480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546393600).

287172480 is an abundant number, since it is smaller than the sum of its proper divisors (805614720).

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

287172480 is a wasteful number, since it uses less digits than its factorization.

287172480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981 (or 969 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 287172480 is about 16946.1641677401. The cubic root of 287172480 is about 659.7523405046.

The spelling of 287172480 in words is "two hundred eighty-seven million, one hundred seventy-two thousand, four hundred eighty".