109649220 has 24 divisors (see below), whose sum is σ = 307017984. Its totient is φ = 29239776.

The previous prime is 109649191. The next prime is 109649251. The reversal of 109649220 is 22946901.

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 7 ways as a sum of consecutive naturals, for example, 913684 + ... + 913803.

It is an arithmetic number, because the mean of its divisors is an integer number (12792416).

Almost surely, 2^109649220 is an apocalyptic number.

109649220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109649220 is an abundant number, since it is smaller than the sum of its proper divisors (197368764).

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

109649220 is a wasteful number, since it uses less digits than its factorization.

109649220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827499 (or 1827497 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 109649220 is about 10471.3523481927. The cubic root of 109649220 is about 478.6321299490.

The spelling of 109649220 in words is "one hundred nine million, six hundred forty-nine thousand, two hundred twenty".