109628720 has 20 divisors (see below), whose sum is σ = 254886960. Its totient is φ = 43851456.

The previous prime is 109628719. The next prime is 109628737. The reversal of 109628720 is 27826901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685100 + ... + 685259.

It is an arithmetic number, because the mean of its divisors is an integer number (12744348).

Almost surely, 2^109628720 is an apocalyptic number.

109628720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109628720 is an abundant number, since it is smaller than the sum of its proper divisors (145258240).

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

109628720 is a wasteful number, since it uses less digits than its factorization.

109628720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370372 (or 1370366 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 109628720 is about 10470.3734412866. The cubic root of 109628720 is about 478.6022997620.

The spelling of 109628720 in words is "one hundred nine million, six hundred twenty-eight thousand, seven hundred twenty".