163743120 has 120 divisors (see below), whose sum is σ = 570338496. Its totient is φ = 43659648.

The previous prime is 163743091. The next prime is 163743127. The reversal of 163743120 is 21347361.

163743120 is a `hidden beast` number, since 1 + 637 + 4 + 3 + 1 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (163743127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15229 + ... + 23651.

Almost surely, 2^163743120 is an apocalyptic number.

163743120 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 163743120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285169248).

163743120 is an abundant number, since it is smaller than the sum of its proper divisors (406595376).

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

163743120 is an equidigital number, since it uses as much as digits as its factorization.

163743120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451 (or 8433 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 163743120 is about 12796.2150654012. The cubic root of 163743120 is about 547.0844285010.

The spelling of 163743120 in words is "one hundred sixty-three million, seven hundred forty-three thousand, one hundred twenty".