163442720 has 48 divisors (see below), whose sum is σ = 441298368. Its totient is φ = 56037120.

The previous prime is 163442717. The next prime is 163442723. The reversal of 163442720 is 27244361.

163442720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163442717) and next prime (163442723).

It is not an unprimeable number, because it can be changed into a prime (163442723) 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 7 ways as a sum of consecutive naturals, for example, 71846 + ... + 74085.

It is an arithmetic number, because the mean of its divisors is an integer number (9193716).

Almost surely, 2^163442720 is an apocalyptic number.

163442720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163442720 is an abundant number, since it is smaller than the sum of its proper divisors (277855648).

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

163442720 is a wasteful number, since it uses less digits than its factorization.

163442720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145953 (or 145945 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 163442720 is about 12784.4718310926. The cubic root of 163442720 is about 546.7496668211.

The spelling of 163442720 in words is "one hundred sixty-three million, four hundred forty-two thousand, seven hundred twenty".