109436640 has 48 divisors (see below), whose sum is σ = 344726928. Its totient is φ = 29182976.

The previous prime is 109436617. The next prime is 109436647. The reversal of 109436640 is 46634901.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109436647) 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, 113517 + ... + 114476.

It is an arithmetic number, because the mean of its divisors is an integer number (7181811).

Almost surely, 2^109436640 is an apocalyptic number.

109436640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109436640 is an abundant number, since it is smaller than the sum of its proper divisors (235290288).

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

109436640 is a wasteful number, since it uses less digits than its factorization.

109436640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228011 (or 228003 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 109436640 is about 10461.1968722513. The cubic root of 109436640 is about 478.3226173574.

The spelling of 109436640 in words is "one hundred nine million, four hundred thirty-six thousand, six hundred forty".