108721734 has 16 divisors (see below), whose sum is σ = 237211200. Its totient is φ = 32945960.

The previous prime is 108721733. The next prime is 108721751. The reversal of 108721734 is 437127801.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 108721695 and 108721704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108721733) 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, 823584 + ... + 823715.

It is an arithmetic number, because the mean of its divisors is an integer number (14825700).

Almost surely, 2^108721734 is an apocalyptic number.

108721734 is an abundant number, since it is smaller than the sum of its proper divisors (128489466).

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

108721734 is a wasteful number, since it uses less digits than its factorization.

108721734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647315.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 108721734 is about 10426.9714682644. The cubic root of 108721734 is about 477.2787773069.

The spelling of 108721734 in words is "one hundred eight million, seven hundred twenty-one thousand, seven hundred thirty-four".