287072898 has 64 divisors (see below), whose sum is σ = 686665728. Its totient is φ = 78295680.

The previous prime is 287072879. The next prime is 287072909. The reversal of 287072898 is 898270782.

It is a happy number.

It is a super-2 number, since 2×287072898² = 164821697532236808, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 287072898.

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, 79161 + ... + 82707.

It is an arithmetic number, because the mean of its divisors is an integer number (10729152).

Almost surely, 2^287072898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287072898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343332864).

287072898 is an abundant number, since it is smaller than the sum of its proper divisors (399592830).

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

287072898 is a wasteful number, since it uses less digits than its factorization.

287072898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647.

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 287072898 is about 16943.2257259354. The cubic root of 287072898 is about 659.6760715284.

The spelling of 287072898 in words is "two hundred eighty-seven million, seventy-two thousand, eight hundred ninety-eight".