285497884672 has 400 divisors, whose sum is σ = 811748794752. Its totient is φ = 96636764160.

The previous prime is 285497884631. The next prime is 285497884697. The reversal of 285497884672 is 276488794582.

It is a super-2 number, since 2×285497884672² (a number of 24 digits) contains 22 as substring.

Its product of digits (433520640) is a multiple of the sum of its prime factors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16793993208 + ... + 16793993224.

Almost surely, 2^285497884672 is an apocalyptic number.

285497884672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

285497884672 is a droll number since its even prime factors and its odd prime factors have the same sum.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285497884672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405874397376).

285497884672 is an abundant number, since it is smaller than the sum of its proper divisors (526250910080).

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

285497884672 is an frugal number, since it uses more digits than its factorization.

285497884672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 50 counting only the distinct ones).

The product of its digits is 433520640, while the sum is 70.

The spelling of 285497884672 in words is "two hundred eighty-five billion, four hundred ninety-seven million, eight hundred eighty-four thousand, six hundred seventy-two".