285323601920 has 384 divisors, whose sum is σ = 827250278400. Its totient is φ = 92265578496.

The previous prime is 285323601919. The next prime is 285323601943. The reversal of 285323601920 is 29106323582.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521615087 + ... + 521615633.

It is an arithmetic number, because the mean of its divisors is an integer number (2154297600).

Almost surely, 2^285323601920 is an apocalyptic number.

285323601920 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 285323601920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413625139200).

285323601920 is an abundant number, since it is smaller than the sum of its proper divisors (541926676480).

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

285323601920 is a wasteful number, since it uses less digits than its factorization.

285323601920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 285323601920 in words is "two hundred eighty-five billion, three hundred twenty-three million, six hundred one thousand, nine hundred twenty".