285398344 has 96 divisors (see below), whose sum is σ = 685942560. Its totient is φ = 110990880.

The previous prime is 285398291. The next prime is 285398371. The reversal of 285398344 is 443893582.

It is a junction number, because it is equal to n+sod(n) for n = 285398294 and 285398303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521479 + ... + 522025.

It is an arithmetic number, because the mean of its divisors is an integer number (7145235).

Almost surely, 2^285398344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285398344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (342971280).

285398344 is an abundant number, since it is smaller than the sum of its proper divisors (400544216).

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

285398344 is a wasteful number, since it uses less digits than its factorization.

285398344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 567 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 285398344 is about 16893.7368275938. The cubic root of 285398344 is about 658.3908949438.

The spelling of 285398344 in words is "two hundred eighty-five million, three hundred ninety-eight thousand, three hundred forty-four".