285443712 has 48 divisors (see below), whose sum is σ = 821397330. Its totient is φ = 95147520.

The previous prime is 285443693. The next prime is 285443713. The reversal of 285443712 is 217344582.

It is a happy number.

285443712 is a `hidden beast` number, since 285 + 4 + 4 + 371 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 236667456 + 48776256 = 15384^2 + 6984^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×285443712² = 162956225440677888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (285443713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122739 + ... + 125042.

Almost surely, 2^285443712 is an apocalyptic number.

It is an amenable number.

285443712 is an abundant number, since it is smaller than the sum of its proper divisors (535953618).

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

285443712 is a wasteful number, since it uses less digits than its factorization.

285443712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247801 (or 247786 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 285443712 is about 16895.0795203811. The cubic root of 285443712 is about 658.4257798642.

The spelling of 285443712 in words is "two hundred eighty-five million, four hundred forty-three thousand, seven hundred twelve".