285137816 has 16 divisors (see below), whose sum is σ = 547067400. Its totient is φ = 139253184.

The previous prime is 285137803. The next prime is 285137819. The reversal of 285137816 is 618731582.

It is a super-2 number, since 2×285137816² = 162607148226499712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285137819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414101 + ... + 414788.

Almost surely, 2^285137816 is an apocalyptic number.

It is an amenable number.

285137816 is a deficient number, since it is larger than the sum of its proper divisors (261929584).

285137816 is a wasteful number, since it uses less digits than its factorization.

285137816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828938 (or 828934 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 285137816 is about 16886.0242804516. The cubic root of 285137816 is about 658.1904949449.

The spelling of 285137816 in words is "two hundred eighty-five million, one hundred thirty-seven thousand, eight hundred sixteen".