108521856 has 112 divisors (see below), whose sum is σ = 324424260. Its totient is φ = 36142848.

The previous prime is 108521849. The next prime is 108521891. The reversal of 108521856 is 658125801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 108521856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 92731 + ... + 93893.

Almost surely, 2^108521856 is an apocalyptic number.

108521856 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 108521856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162212130).

108521856 is an abundant number, since it is smaller than the sum of its proper divisors (215902404).

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

108521856 is an frugal number, since it uses more digits than its factorization.

108521856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 108521856 is about 10417.3823967444. The cubic root of 108521856 is about 476.9861156514.

The spelling of 108521856 in words is "one hundred eight million, five hundred twenty-one thousand, eight hundred fifty-six".