120533644 has 96 divisors (see below), whose sum is σ = 283852800. Its totient is φ = 43364160.

The previous prime is 120533641. The next prime is 120533659. The reversal of 120533644 is 446335021.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (120533641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251397 + ... + 251875.

It is an arithmetic number, because the mean of its divisors is an integer number (2956800).

Almost surely, 2^120533644 is an apocalyptic number.

120533644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120533644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141926400).

120533644 is an abundant number, since it is smaller than the sum of its proper divisors (163319156).

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

120533644 is a wasteful number, since it uses less digits than its factorization.

120533644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 120533644 is about 10978.7815353071. The cubic root of 120533644 is about 493.9724888655.

Adding to 120533644 its reverse (446335021), we get a palindrome (566868665).

The spelling of 120533644 in words is "one hundred twenty million, five hundred thirty-three thousand, six hundred forty-four".