120553428 has 12 divisors (see below), whose sum is σ = 281291360. Its totient is φ = 40184472.

The previous prime is 120553427. The next prime is 120553469. The reversal of 120553428 is 824355021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 120553395 and 120553404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120553427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5023048 + ... + 5023071.

Almost surely, 2^120553428 is an apocalyptic number.

It is an amenable number.

120553428 is an abundant number, since it is smaller than the sum of its proper divisors (160737932).

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

120553428 is a wasteful number, since it uses less digits than its factorization.

120553428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046126 (or 10046124 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 120553428 is about 10979.6825090710. The cubic root of 120553428 is about 493.9995137325. Note that the first 3 decimals are identical.

The spelling of 120553428 in words is "one hundred twenty million, five hundred fifty-three thousand, four hundred twenty-eight".