285140860928 has 480 divisors, whose sum is σ = 768238829568. Its totient is φ = 102511411200.

The previous prime is 285140860903. The next prime is 285140860931. The reversal of 285140860928 is 829068041582.

It is a super-2 number, since 2×285140860928² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 285140860928.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 899497826 + ... + 899498142.

Almost surely, 2^285140860928 is an apocalyptic number.

285140860928 is a gapful number since it is divisible by the number (28) 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 285140860928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384119414784).

285140860928 is an abundant number, since it is smaller than the sum of its proper divisors (483097968640).

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

285140860928 is a wasteful number, since it uses less digits than its factorization.

285140860928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 285140860928 in words is "two hundred eighty-five billion, one hundred forty million, eight hundred sixty thousand, nine hundred twenty-eight".