285399904208 has 20 divisors (see below), whose sum is σ = 562334558880. Its totient is φ = 140281308384.

The previous prime is 285399904199. The next prime is 285399904249. The reversal of 285399904208 is 802409993582.

It is a super-2 number, since 2×285399904208² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151164260 + ... + 151166147.

It is an arithmetic number, because the mean of its divisors is an integer number (28116727944).

Almost surely, 2^285399904208 is an apocalyptic number.

It is an amenable number.

285399904208 is a deficient number, since it is larger than the sum of its proper divisors (276934654672).

285399904208 is a wasteful number, since it uses less digits than its factorization.

285399904208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302330474 (or 302330468 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 285399904208 in words is "two hundred eighty-five billion, three hundred ninety-nine million, nine hundred four thousand, two hundred eight".