285497344 has 192 divisors, whose sum is σ = 707616000. Its totient is φ = 113541120.

The previous prime is 285497323. The next prime is 285497353. The reversal of 285497344 is 443794582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

Its product of digits (967680) is a multiple of the sum of its prime divisors (84).

It is a junction number, because it is equal to n+sod(n) for n = 285497294 and 285497303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9844722 + ... + 9844750.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 2^285497344 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 285497344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353808000).

285497344 is an abundant number, since it is smaller than the sum of its proper divisors (422118656).

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

285497344 is a wasteful number, since it uses less digits than its factorization.

285497344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 84 counting only the distinct ones).

The product of its digits is 967680, while the sum is 46.

The square root of 285497344 is about 16896.6666535148. Note that the first 4 decimals coincide. The cubic root of 285497344 is about 658.4670144737.

The spelling of 285497344 in words is "two hundred eighty-five million, four hundred ninety-seven thousand, three hundred forty-four".