120005644 has 12 divisors (see below), whose sum is σ = 229101768. Its totient is φ = 54548000.

The previous prime is 120005597. The next prime is 120005671. The reversal of 120005644 is 446500021.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363657 + ... + 1363744.

It is an arithmetic number, because the mean of its divisors is an integer number (19091814).

Almost surely, 2^120005644 is an apocalyptic number.

It is an amenable number.

120005644 is a deficient number, since it is larger than the sum of its proper divisors (109096124).

120005644 is a wasteful number, since it uses less digits than its factorization.

120005644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727416 (or 2727414 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 120005644 is about 10954.7087592505. The cubic root of 120005644 is about 493.2501476898.

Adding to 120005644 its reverse (446500021), we get a palindrome (566505665).

The spelling of 120005644 in words is "one hundred twenty million, five thousand, six hundred forty-four".