287671242 has 32 divisors (see below), whose sum is σ = 604961280. Its totient is φ = 91062720.

The previous prime is 287671199. The next prime is 287671249. The reversal of 287671242 is 242176782.

It is a self number, because there is not a number n which added to its sum of digits gives 287671242.

It is not an unprimeable number, because it can be changed into a prime (287671249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2938 + ... + 24165.

It is an arithmetic number, because the mean of its divisors is an integer number (18905040).

Almost surely, 2^287671242 is an apocalyptic number.

287671242 is an abundant number, since it is smaller than the sum of its proper divisors (317290038).

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

287671242 is a wasteful number, since it uses less digits than its factorization.

287671242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27198.

The product of its digits is 75264, while the sum is 39.

The square root of 287671242 is about 16960.8738572044. The cubic root of 287671242 is about 660.1340728543.

The spelling of 287671242 in words is "two hundred eighty-seven million, six hundred seventy-one thousand, two hundred forty-two".