287080938 has 48 divisors (see below), whose sum is σ = 662146056. Its totient is φ = 89579520.

The previous prime is 287080901. The next prime is 287080939. The reversal of 287080938 is 839080782.

It can be written as a sum of positive squares in 4 ways, for example, as 282139209 + 4941729 = 16797^2 + 2223^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 287080893 and 287080902.

It is not an unprimeable number, because it can be changed into a prime (287080939) 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, 56628 + ... + 61488.

Almost surely, 2^287080938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 287080938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331073028).

287080938 is an abundant number, since it is smaller than the sum of its proper divisors (375065118).

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

287080938 is a wasteful number, since it uses less digits than its factorization.

287080938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079 (or 5076 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 287080938 is about 16943.4629872408. The cubic root of 287080938 is about 659.6822299480.

The spelling of 287080938 in words is "two hundred eighty-seven million, eighty thousand, nine hundred thirty-eight".