163842240 has 56 divisors (see below), whose sum is σ = 520202160. Its totient is φ = 43691008.

The previous prime is 163842229. The next prime is 163842241. The reversal of 163842240 is 42248361.

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

It is a junction number, because it is equal to n+sod(n) for n = 163842198 and 163842207.

It is not an unprimeable number, because it can be changed into a prime (163842241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84375 + ... + 86294.

Almost surely, 2^163842240 is an apocalyptic number.

163842240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163842240 is an abundant number, since it is smaller than the sum of its proper divisors (356359920).

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

163842240 is a wasteful number, since it uses less digits than its factorization.

163842240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170689 (or 170679 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 163842240 is about 12800.0874997009. The cubic root of 163842240 is about 547.1947966401.

The spelling of 163842240 in words is "one hundred sixty-three million, eight hundred forty-two thousand, two hundred forty".