109429728 has 48 divisors (see below), whose sum is σ = 287804160. Its totient is φ = 36406656.

The previous prime is 109429687. The next prime is 109429729. The reversal of 109429728 is 827924901.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 109429728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109429729) 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, 81801 + ... + 83127.

It is an arithmetic number, because the mean of its divisors is an integer number (5995920).

Almost surely, 2^109429728 is an apocalyptic number.

It is an amenable number.

109429728 is an abundant number, since it is smaller than the sum of its proper divisors (178374432).

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

109429728 is a wasteful number, since it uses less digits than its factorization.

109429728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2191 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 109429728 is about 10460.8665033065. The cubic root of 109429728 is about 478.3125468864.

The spelling of 109429728 in words is "one hundred nine million, four hundred twenty-nine thousand, seven hundred twenty-eight".