287382942 has 144 divisors (see below), whose sum is σ = 832291200. Its totient is φ = 70670880.

The previous prime is 287382941. The next prime is 287382947. The reversal of 287382942 is 249283782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287382941) 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 71 ways as a sum of consecutive naturals, for example, 183559 + ... + 185117.

It is an arithmetic number, because the mean of its divisors is an integer number (5779800).

Almost surely, 2^287382942 is an apocalyptic number.

287382942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 287382942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416145600).

287382942 is an abundant number, since it is smaller than the sum of its proper divisors (544908258).

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

287382942 is a wasteful number, since it uses less digits than its factorization.

287382942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1601 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 287382942 is about 16952.3727542784. The cubic root of 287382942 is about 659.9134735053.

The spelling of 287382942 in words is "two hundred eighty-seven million, three hundred eighty-two thousand, nine hundred forty-two".