108428256 has 72 divisors (see below), whose sum is σ = 321768720. Its totient is φ = 34569216.

The previous prime is 108428143. The next prime is 108428263. The reversal of 108428256 is 652824801.

It is a tau number, because it is divible by the number of its divisors (72).

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 108428256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1561 + ... + 14808.

It is an arithmetic number, because the mean of its divisors is an integer number (4469010).

Almost surely, 2^108428256 is an apocalyptic number.

108428256 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 108428256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160884360).

108428256 is an abundant number, since it is smaller than the sum of its proper divisors (213340464).

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

108428256 is a wasteful number, since it uses less digits than its factorization.

108428256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16408 (or 16397 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 108428256 is about 10412.8889363135. Note that the first 3 decimals coincide. The cubic root of 108428256 is about 476.8489428461.

The spelling of 108428256 in words is "one hundred eight million, four hundred twenty-eight thousand, two hundred fifty-six".