287350560 has 288 divisors, whose sum is σ = 1160490240. Its totient is φ = 63350784.

The previous prime is 287350549. The next prime is 287350579. The reversal of 287350560 is 65053782.

287350560 is a `hidden beast` number, since 28 + 73 + 5 + 0 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 291829 + ... + 292811.

It is an arithmetic number, because the mean of its divisors is an integer number (4029480).

Almost surely, 2^287350560 is an apocalyptic number.

287350560 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 287350560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580245120).

287350560 is an abundant number, since it is smaller than the sum of its proper divisors (873139680).

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

287350560 is a wasteful number, since it uses less digits than its factorization.

287350560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 287350560 is about 16951.4176398318. The cubic root of 287350560 is about 659.8886864614. Note that the first 3 decimals are identical.

The spelling of 287350560 in words is "two hundred eighty-seven million, three hundred fifty thousand, five hundred sixty".