108213444 has 18 divisors (see below), whose sum is σ = 273539630. Its totient is φ = 36071136.

The previous prime is 108213401. The next prime is 108213463. The reversal of 108213444 is 444312801.

108213444 is a `hidden beast` number, since 1 + 0 + 8 + 213 + 444 = 666.

It can be written as a sum of positive squares in only one way, i.e., 101243844 + 6969600 = 10062^2 + 2640^2 .

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

It is a super-2 number, since 2×108213444² = 23420298924682272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1502929 + ... + 1503000.

Almost surely, 2^108213444 is an apocalyptic number.

It is an amenable number.

108213444 is an abundant number, since it is smaller than the sum of its proper divisors (165326186).

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

108213444 is a wasteful number, since it uses less digits than its factorization.

108213444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005939 (or 3005934 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 108213444 is about 10402.5691057546. The cubic root of 108213444 is about 476.5338325043.

The spelling of 108213444 in words is "one hundred eight million, two hundred thirteen thousand, four hundred forty-four".