285196900 has 72 divisors (see below), whose sum is σ = 643458816. Its totient is φ = 109603200.

The previous prime is 285196883. The next prime is 285196903. The reversal of 285196900 is 9691582.

It is a super-2 number, since 2×285196900² = 162674543539220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285196903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 610467 + ... + 610933.

It is an arithmetic number, because the mean of its divisors is an integer number (8936928).

Almost surely, 2^285196900 is an apocalyptic number.

285196900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285196900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321729408).

285196900 is an abundant number, since it is smaller than the sum of its proper divisors (358261916).

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

285196900 is a wasteful number, since it uses less digits than its factorization.

285196900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 285196900 is about 16887.7736839407. The cubic root of 285196900 is about 658.2359534790.

The spelling of 285196900 in words is "two hundred eighty-five million, one hundred ninety-six thousand, nine hundred".