109897728 has 96 divisors (see below), whose sum is σ = 302964480. Its totient is φ = 35389440.

The previous prime is 109897721. The next prime is 109897757. The reversal of 109897728 is 827798901.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109897721) 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, 190176 + ... + 190752.

It is an arithmetic number, because the mean of its divisors is an integer number (3155880).

Almost surely, 2^109897728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109897728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151482240).

109897728 is an abundant number, since it is smaller than the sum of its proper divisors (193066752).

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

109897728 is an equidigital number, since it uses as much as digits as its factorization.

109897728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 51.

The square root of 109897728 is about 10483.2117216052. The cubic root of 109897728 is about 478.9934463011.

The spelling of 109897728 in words is "one hundred nine million, eight hundred ninety-seven thousand, seven hundred twenty-eight".