287666130 has 64 divisors (see below), whose sum is σ = 711089280. Its totient is φ = 74436096.

The previous prime is 287666117. The next prime is 287666147. The reversal of 287666130 is 31666782.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222526 + ... + 223814.

It is an arithmetic number, because the mean of its divisors is an integer number (11110770).

Almost surely, 2^287666130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287666130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355544640).

287666130 is an abundant number, since it is smaller than the sum of its proper divisors (423423150).

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

287666130 is a wasteful number, since it uses less digits than its factorization.

287666130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 287666130 is about 16960.7231567525. The cubic root of 287666130 is about 660.1301625743.

It can be divided in two parts, 2876 and 66130, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 287666130 in words is "two hundred eighty-seven million, six hundred sixty-six thousand, one hundred thirty".