163073720 has 32 divisors (see below), whose sum is σ = 370487520. Its totient is φ = 64594560.

The previous prime is 163073719. The next prime is 163073731. The reversal of 163073720 is 27370361.

163073720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15671 + ... + 23910.

It is an arithmetic number, because the mean of its divisors is an integer number (11577735).

Almost surely, 2^163073720 is an apocalyptic number.

163073720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163073720 is an abundant number, since it is smaller than the sum of its proper divisors (207413800).

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

163073720 is a wasteful number, since it uses less digits than its factorization.

163073720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39695 (or 39691 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 163073720 is about 12770.0321064592. The cubic root of 163073720 is about 546.3378963720.

The spelling of 163073720 in words is "one hundred sixty-three million, seventy-three thousand, seven hundred twenty".