230161920 has 160 divisors (see below), whose sum is σ = 768379392. Its totient is φ = 58662912.

The previous prime is 230161913. The next prime is 230161927. The reversal of 230161920 is 29161032.

It is an interprime number because it is at equal distance from previous prime (230161913) and next prime (230161927).

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230161927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175989 + ... + 177291.

Almost surely, 2^230161920 is an apocalyptic number.

230161920 is a gapful number since it is divisible by the number (20) 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 230161920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384189696).

230161920 is an abundant number, since it is smaller than the sum of its proper divisors (538217472).

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

230161920 is a wasteful number, since it uses less digits than its factorization.

230161920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 230161920 is about 15171.0882931977. The cubic root of 230161920 is about 612.8363123185.

The spelling of 230161920 in words is "two hundred thirty million, one hundred sixty-one thousand, nine hundred twenty".