109979728 has 20 divisors (see below), whose sum is σ = 214007508. Its totient is φ = 54752000.

The previous prime is 109979713. The next prime is 109979729. The reversal of 109979728 is 827979901.

It can be written as a sum of positive squares in 2 ways, for example, as 32398864 + 77580864 = 5692^2 + 8808^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109979729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11023 + ... + 18478.

Almost surely, 2^109979728 is an apocalyptic number.

It is an amenable number.

109979728 is a deficient number, since it is larger than the sum of its proper divisors (104027780).

109979728 is a wasteful number, since it uses less digits than its factorization.

109979728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29742 (or 29736 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 109979728 is about 10487.1220074909. The cubic root of 109979728 is about 479.1125500606.

The spelling of 109979728 in words is "one hundred nine million, nine hundred seventy-nine thousand, seven hundred twenty-eight".