109787728 has 10 divisors (see below), whose sum is σ = 212713754. Its totient is φ = 54893856.

The previous prime is 109787663. The next prime is 109787759. The reversal of 109787728 is 827787901.

It can be written as a sum of positive squares in only one way, i.e., 82664464 + 27123264 = 9092^2 + 5208^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430851 + ... + 3430882.

Almost surely, 2^109787728 is an apocalyptic number.

It is an amenable number.

109787728 is a deficient number, since it is larger than the sum of its proper divisors (102926026).

109787728 is an equidigital number, since it uses as much as digits as its factorization.

109787728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6861741 (or 6861735 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 49.

The square root of 109787728 is about 10477.9639243510. The cubic root of 109787728 is about 478.8335798832.

The spelling of 109787728 in words is "one hundred nine million, seven hundred eighty-seven thousand, seven hundred twenty-eight".