109397520 has 80 divisors (see below), whose sum is σ = 376821120. Its totient is φ = 29172096.

The previous prime is 109397513. The next prime is 109397527. The reversal of 109397520 is 25793901.

It is an interprime number because it is at equal distance from previous prime (109397513) and next prime (109397527).

It is a tau number, because it is divible by the number of its divisors (80).

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

It is not an unprimeable number, because it can be changed into a prime (109397527) 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, 23164 + ... + 27483.

It is an arithmetic number, because the mean of its divisors is an integer number (4710264).

Almost surely, 2^109397520 is an apocalyptic number.

109397520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109397520 is an abundant number, since it is smaller than the sum of its proper divisors (267423600).

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

109397520 is a wasteful number, since it uses less digits than its factorization.

109397520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50669 (or 50657 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 109397520 is about 10459.3269381925. The cubic root of 109397520 is about 478.2656156961.

The spelling of 109397520 in words is "one hundred nine million, three hundred ninety-seven thousand, five hundred twenty".