163297740 has 96 divisors (see below), whose sum is σ = 473518080. Its totient is φ = 42022656.

The previous prime is 163297697. The next prime is 163297747. The reversal of 163297740 is 47792361.

It is not an unprimeable number, because it can be changed into a prime (163297747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222414 + ... + 223146.

It is an arithmetic number, because the mean of its divisors is an integer number (4932480).

Almost surely, 2^163297740 is an apocalyptic number.

163297740 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 163297740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236759040).

163297740 is an abundant number, since it is smaller than the sum of its proper divisors (310220340).

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

163297740 is a wasteful number, since it uses less digits than its factorization.

163297740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 163297740 is about 12778.8004131843. The cubic root of 163297740 is about 546.5879563126.

The spelling of 163297740 in words is "one hundred sixty-three million, two hundred ninety-seven thousand, seven hundred forty".