108891306 has 12 divisors (see below), whose sum is σ = 235931202. Its totient is φ = 36297096.

The previous prime is 108891301. The next prime is 108891311. The reversal of 108891306 is 603198801.

It is an interprime number because it is at equal distance from previous prime (108891301) and next prime (108891311).

It can be written as a sum of positive squares in only one way, i.e., 108680625 + 210681 = 10425^2 + 459^2 .

It is a super-3 number, since 3×108891306³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108891301) 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, 3024741 + ... + 3024776.

Almost surely, 2^108891306 is an apocalyptic number.

108891306 is an abundant number, since it is smaller than the sum of its proper divisors (127039896).

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

108891306 is a wasteful number, since it uses less digits than its factorization.

108891306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049525 (or 6049522 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 108891306 is about 10435.0997120296. The cubic root of 108891306 is about 477.5267837648.

The spelling of 108891306 in words is "one hundred eight million, eight hundred ninety-one thousand, three hundred six".