285348440 has 64 divisors (see below), whose sum is σ = 710156160. Its totient is φ = 102504960.

The previous prime is 285348433. The next prime is 285348457. The reversal of 285348440 is 44843582.

It is a hoax number, since the sum of its digits (38) 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 = 285348394 and 285348403.

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, 11825 + ... + 26655.

It is an arithmetic number, because the mean of its divisors is an integer number (11096190).

Almost surely, 2^285348440 is an apocalyptic number.

285348440 is a gapful number since it is divisible by the number (20) 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 285348440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355078080).

285348440 is an abundant number, since it is smaller than the sum of its proper divisors (424807720).

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

285348440 is a wasteful number, since it uses less digits than its factorization.

285348440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14892 (or 14888 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

The square root of 285348440 is about 16892.2597659401. The cubic root of 285348440 is about 658.3525178764.

The spelling of 285348440 in words is "two hundred eighty-five million, three hundred forty-eight thousand, four hundred forty".