120890028 has 48 divisors (see below), whose sum is σ = 329880320. Its totient is φ = 33735744.

The previous prime is 120890023. The next prime is 120890039. The reversal of 120890028 is 820098021.

It is a super-2 number, since 2×120890028² = 29228797739681568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120889977 and 120890004.

It is not an unprimeable number, because it can be changed into a prime (120890023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13123 + ... + 20346.

Almost surely, 2^120890028 is an apocalyptic number.

It is an amenable number.

120890028 is an abundant number, since it is smaller than the sum of its proper divisors (208990292).

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

120890028 is a wasteful number, since it uses less digits than its factorization.

120890028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33526 (or 33524 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 120890028 is about 10995.0001364256. Note that the first 3 decimals coincide. The cubic root of 120890028 is about 494.4588556204.

The spelling of 120890028 in words is "one hundred twenty million, eight hundred ninety thousand, twenty-eight".