285403104 has 144 divisors (see below), whose sum is σ = 976510080. Its totient is φ = 77241600.

The previous prime is 285403099. The next prime is 285403109. The reversal of 285403104 is 401304582.

It is an interprime number because it is at equal distance from previous prime (285403099) and next prime (285403109).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285403109) 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, 34579 + ... + 42029.

It is an arithmetic number, because the mean of its divisors is an integer number (6781320).

Almost surely, 2^285403104 is an apocalyptic number.

285403104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285403104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488255040).

285403104 is an abundant number, since it is smaller than the sum of its proper divisors (691106976).

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

285403104 is a wasteful number, since it uses less digits than its factorization.

285403104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7493 (or 7482 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 285403104 is about 16893.8777076194. The cubic root of 285403104 is about 658.3945552351.

Adding to 285403104 its reverse (401304582), we get a palindrome (686707686).

The spelling of 285403104 in words is "two hundred eighty-five million, four hundred three thousand, one hundred four".