109321640 has 16 divisors (see below), whose sum is σ = 245973780. Its totient is φ = 43728640.

The previous prime is 109321591. The next prime is 109321657. The reversal of 109321640 is 46123901.

It can be written as a sum of positive squares in 2 ways, for example, as 107288164 + 2033476 = 10358^2 + 1426^2 .

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, 1366481 + ... + 1366560.

Almost surely, 2^109321640 is an apocalyptic number.

109321640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109321640 is an abundant number, since it is smaller than the sum of its proper divisors (136652140).

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

109321640 is a wasteful number, since it uses less digits than its factorization.

109321640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733052 (or 2733048 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 109321640 is about 10455.6989245100. The cubic root of 109321640 is about 478.1550123698.

The spelling of 109321640 in words is "one hundred nine million, three hundred twenty-one thousand, six hundred forty".