287867214 has 48 divisors (see below), whose sum is σ = 658054800. Its totient is φ = 90695808.

The previous prime is 287867213. The next prime is 287867219. The reversal of 287867214 is 412768782.

It is a super-2 number, since 2×287867214² = 165735065792243592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 287867214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287867213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 222682 + ... + 223970.

It is an arithmetic number, because the mean of its divisors is an integer number (13709475).

Almost surely, 2^287867214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287867214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329027400).

287867214 is an abundant number, since it is smaller than the sum of its proper divisors (370187586).

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

287867214 is a wasteful number, since it uses less digits than its factorization.

287867214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1966 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 287867214 is about 16966.6500523822. The cubic root of 287867214 is about 660.2839411879.

The spelling of 287867214 in words is "two hundred eighty-seven million, eight hundred sixty-seven thousand, two hundred fourteen".