120183840 has 144 divisors (see below), whose sum is σ = 468756288. Its totient is φ = 27468288.

The previous prime is 120183823. The next prime is 120183857. The reversal of 120183840 is 48381021.

It is an interprime number because it is at equal distance from previous prime (120183823) and next prime (120183857).

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4119 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (3255252).

Almost surely, 2^120183840 is an apocalyptic number.

120183840 is a gapful number since it is divisible by the number (10) 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 120183840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234378144).

120183840 is an abundant number, since it is smaller than the sum of its proper divisors (348572448).

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

120183840 is a wasteful number, since it uses less digits than its factorization.

120183840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11951 (or 11940 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 120183840 is about 10962.8390483487. The cubic root of 120183840 is about 493.4941688073.

The spelling of 120183840 in words is "one hundred twenty million, one hundred eighty-three thousand, eight hundred forty".