109878728 has 32 divisors (see below), whose sum is σ = 217028160. Its totient is φ = 52050240.

The previous prime is 109878721. The next prime is 109878731. The reversal of 109878728 is 827878901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (109878721) 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 7 ways as a sum of consecutive naturals, for example, 16898 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (6782130).

Almost surely, 2^109878728 is an apocalyptic number.

It is an amenable number.

109878728 is a deficient number, since it is larger than the sum of its proper divisors (107149432).

109878728 is a wasteful number, since it uses less digits than its factorization.

109878728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717 (or 5713 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 50.

The square root of 109878728 is about 10482.3054716031. The cubic root of 109878728 is about 478.9658406348.

The spelling of 109878728 in words is "one hundred nine million, eight hundred seventy-eight thousand, seven hundred twenty-eight".