109223478 has 160 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 27760320.

The previous prime is 109223449. The next prime is 109223497. The reversal of 109223478 is 874322901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 456883 + ... + 457121.

It is an arithmetic number, because the mean of its divisors is an integer number (1951488).

Almost surely, 2^109223478 is an apocalyptic number.

109223478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 109223478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156119040).

109223478 is an abundant number, since it is smaller than the sum of its proper divisors (203014602).

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

109223478 is a wasteful number, since it uses less digits than its factorization.

109223478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 109223478 is about 10451.0036838574. The cubic root of 109223478 is about 478.0118546572.

It can be divided in two parts, 10922 and 3478, that added together give a square (14400 = 120²).

The spelling of 109223478 in words is "one hundred nine million, two hundred twenty-three thousand, four hundred seventy-eight".