285196788 has 120 divisors (see below), whose sum is σ = 780595200. Its totient is φ = 90683712.

The previous prime is 285196771. The next prime is 285196843. The reversal of 285196788 is 887691582.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1193173 + ... + 1193411.

It is an arithmetic number, because the mean of its divisors is an integer number (6504960).

Almost surely, 2^285196788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285196788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390297600).

285196788 is an abundant number, since it is smaller than the sum of its proper divisors (495398412).

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

285196788 is a wasteful number, since it uses less digits than its factorization.

285196788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 400 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The square root of 285196788 is about 16887.7703679319. The cubic root of 285196788 is about 658.2358673135.

The spelling of 285196788 in words is "two hundred eighty-five million, one hundred ninety-six thousand, seven hundred eighty-eight".