109286856 has 72 divisors (see below), whose sum is σ = 344320470. Its totient is φ = 31223808.

The previous prime is 109286851. The next prime is 109286887. The reversal of 109286856 is 658682901.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 54022500 = 7434^2 + 7350^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (109286851) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11961 + ... + 19016.

Almost surely, 2^109286856 is an apocalyptic number.

It is an amenable number.

109286856 is an abundant number, since it is smaller than the sum of its proper divisors (235033614).

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

109286856 is a wasteful number, since it uses less digits than its factorization.

109286856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31003 (or 30989 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 109286856 is about 10454.0353930910. The cubic root of 109286856 is about 478.1042938105.

The spelling of 109286856 in words is "one hundred nine million, two hundred eighty-six thousand, eight hundred fifty-six".