285613816 has 64 divisors (see below), whose sum is σ = 573868800. Its totient is φ = 132979968.

The previous prime is 285613813. The next prime is 285613817. The reversal of 285613816 is 618316582.

It is a super-3 number, since 3×285613816³ (a number of 26 digits) contains 333 as substring.

Its product of digits (69120) is a multiple of the sum of its prime divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285613813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752151 + ... + 1752313.

It is an arithmetic number, because the mean of its divisors is an integer number (8966700).

Almost surely, 2^285613816 is an apocalyptic number.

It is an amenable number.

285613816 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

285613816 is a wasteful number, since it uses less digits than its factorization.

285613816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 384 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 285613816 is about 16900.1128990312. The cubic root of 285613816 is about 658.5565454213.

The spelling of 285613816 in words is "two hundred eighty-five million, six hundred thirteen thousand, eight hundred sixteen".