120163890 has 96 divisors (see below), whose sum is σ = 362355840. Its totient is φ = 24963840.

The previous prime is 120163873. The next prime is 120163919. The reversal of 120163890 is 98361021.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 47 ways as a sum of consecutive naturals, for example, 23046 + ... + 27774.

It is an arithmetic number, because the mean of its divisors is an integer number (3774540).

Almost surely, 2^120163890 is an apocalyptic number.

120163890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120163890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181177920).

120163890 is an abundant number, since it is smaller than the sum of its proper divisors (242191950).

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

120163890 is a wasteful number, since it uses less digits than its factorization.

120163890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 120163890 is about 10961.9291185448. The cubic root of 120163890 is about 493.4668613272.

The spelling of 120163890 in words is "one hundred twenty million, one hundred sixty-three thousand, eight hundred ninety".