108151220 has 12 divisors (see below), whose sum is σ = 227117604. Its totient is φ = 43260480.

The previous prime is 108151171. The next prime is 108151223. The reversal of 108151220 is 22151801.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84860944 + 23290276 = 9212^2 + 4826^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5407561 = 108151220 / (1 + 0 + 8 + 1 + 5 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 108151192 and 108151201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108151223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2703761 + ... + 2703800.

It is an arithmetic number, because the mean of its divisors is an integer number (18926467).

Almost surely, 2^108151220 is an apocalyptic number.

108151220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108151220 is an abundant number, since it is smaller than the sum of its proper divisors (118966384).

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

108151220 is a wasteful number, since it uses less digits than its factorization.

108151220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407570 (or 5407568 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 108151220 is about 10399.5778760486. The cubic root of 108151220 is about 476.4424774770.

The spelling of 108151220 in words is "one hundred eight million, one hundred fifty-one thousand, two hundred twenty".