108512640 has 96 divisors (see below), whose sum is σ = 374727600. Its totient is φ = 28935168.

The previous prime is 108512633. The next prime is 108512641. The reversal of 108512640 is 46215801.

108512640 is a `hidden beast` number, since 1 + 0 + 8 + 5 + 12 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108512641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3660 + ... + 15179.

Almost surely, 2^108512640 is an apocalyptic number.

108512640 is a gapful number since it is divisible by the number (10) 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 108512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187363800).

108512640 is an abundant number, since it is smaller than the sum of its proper divisors (266214960).

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

108512640 is a wasteful number, since it uses less digits than its factorization.

108512640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18864 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 108512640 is about 10416.9400497459. The cubic root of 108512640 is about 476.9726129075.

The spelling of 108512640 in words is "one hundred eight million, five hundred twelve thousand, six hundred forty".