109220868 has 18 divisors (see below), whose sum is σ = 276086174. Its totient is φ = 36406944.

The previous prime is 109220861. The next prime is 109220879. The reversal of 109220868 is 868022901.

It can be written as a sum of positive squares in only one way, i.e., 66292164 + 42928704 = 8142^2 + 6552^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3033913 = 109220868 / (1 + 0 + 9 + 2 + 2 + 0 + 8 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (109220861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1516921 + ... + 1516992.

Almost surely, 2^109220868 is an apocalyptic number.

109220868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109220868 is an abundant number, since it is smaller than the sum of its proper divisors (166865306).

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

109220868 is a wasteful number, since it uses less digits than its factorization.

109220868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033923 (or 3033918 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 109220868 is about 10450.8788147218. The cubic root of 109220868 is about 478.0080471093.

The spelling of 109220868 in words is "one hundred nine million, two hundred twenty thousand, eight hundred sixty-eight".