108193720 has 32 divisors (see below), whose sum is σ = 251291520. Its totient is φ = 41880960.

The previous prime is 108193717. The next prime is 108193721. The reversal of 108193720 is 27391801.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108193721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42387 + ... + 44866.

It is an arithmetic number, because the mean of its divisors is an integer number (7852860).

Almost surely, 2^108193720 is an apocalyptic number.

108193720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108193720 is an abundant number, since it is smaller than the sum of its proper divisors (143097800).

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

108193720 is a wasteful number, since it uses less digits than its factorization.

108193720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87295 (or 87291 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 108193720 is about 10401.6210275130. The cubic root of 108193720 is about 476.5048782325.

The spelling of 108193720 in words is "one hundred eight million, one hundred ninety-three thousand, seven hundred twenty".