285728688000 has 1024 divisors, whose sum is σ = 1266340608000. Its totient is φ = 61859635200.

The previous prime is 285728687963. The next prime is 285728688023. The reversal of 285728688000 is 886827582.

285728688000 is a `hidden beast` number, since 2 + 8 + 572 + 8 + 68 + 8 + 0 + 0 + 0 = 666.

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 polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57453514 + ... + 57458486.

It is an arithmetic number, because the mean of its divisors is an integer number (1236660750).

Almost surely, 2^285728688000 is an apocalyptic number.

285728688000 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 285728688000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633170304000).

285728688000 is an abundant number, since it is smaller than the sum of its proper divisors (980611920000).

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

285728688000 is a wasteful number, since it uses less digits than its factorization.

285728688000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037 (or 5009 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 285728688000 in words is "two hundred eighty-five billion, seven hundred twenty-eight million, six hundred eighty-eight thousand".