102785856 has 56 divisors (see below), whose sum is σ = 274807680. Its totient is φ = 33902592.

The previous prime is 102785849. The next prime is 102785897. The reversal of 102785856 is 658587201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15865 + ... + 21383.

It is an arithmetic number, because the mean of its divisors is an integer number (4907280).

Almost surely, 2^102785856 is an apocalyptic number.

102785856 is a gapful number since it is divisible by the number (16) 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 102785856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137403840).

102785856 is an abundant number, since it is smaller than the sum of its proper divisors (172021824).

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

102785856 is an equidigital number, since it uses as much as digits as its factorization.

102785856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631 (or 5621 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 102785856 is about 10138.3359581344. The cubic root of 102785856 is about 468.4297316655.

The spelling of 102785856 in words is "one hundred two million, seven hundred eighty-five thousand, eight hundred fifty-six".