109270728 has 64 divisors (see below), whose sum is σ = 346896000. Its totient is φ = 31219776.

The previous prime is 109270727. The next prime is 109270787. The reversal of 109270728 is 827072901.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 109270692 and 109270701.

It is not an unprimeable number, because it can be changed into a prime (109270727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34623 + ... + 37646.

It is an arithmetic number, because the mean of its divisors is an integer number (5420250).

Almost surely, 2^109270728 is an apocalyptic number.

109270728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109270728 is an abundant number, since it is smaller than the sum of its proper divisors (237625272).

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

109270728 is a wasteful number, since it uses less digits than its factorization.

109270728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72291 (or 72281 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 109270728 is about 10453.2639878652. The cubic root of 109270728 is about 478.0807739177.

The spelling of 109270728 in words is "one hundred nine million, two hundred seventy thousand, seven hundred twenty-eight".