109445520 has 40 divisors (see below), whose sum is σ = 339281856. Its totient is φ = 29185408.

The previous prime is 109445471. The next prime is 109445521. The reversal of 109445520 is 25544901.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (109445521) 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, 227772 + ... + 228251.

Almost surely, 2^109445520 is an apocalyptic number.

109445520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109445520 is an abundant number, since it is smaller than the sum of its proper divisors (229836336).

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

109445520 is a wasteful number, since it uses less digits than its factorization.

109445520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456039 (or 456033 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 109445520 is about 10461.6212892649. The cubic root of 109445520 is about 478.3355544931.

The spelling of 109445520 in words is "one hundred nine million, four hundred forty-five thousand, five hundred twenty".