108693840 has 80 divisors (see below), whose sum is σ = 340299648. Its totient is φ = 28697088.

The previous prime is 108693833. The next prime is 108693841. The reversal of 108693840 is 48396801.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108693841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22522 + ... + 26918.

Almost surely, 2^108693840 is an apocalyptic number.

108693840 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 108693840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170149824).

108693840 is an abundant number, since it is smaller than the sum of its proper divisors (231605808).

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

108693840 is a wasteful number, since it uses less digits than its factorization.

108693840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516 (or 4510 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 108693840 is about 10425.6337936837. The cubic root of 108693840 is about 477.2379564197.

The spelling of 108693840 in words is "one hundred eight million, six hundred ninety-three thousand, eight hundred forty".