230191920 has 120 divisors (see below), whose sum is σ = 883517856. Its totient is φ = 52614144.

The previous prime is 230191903. The next prime is 230191933. The reversal of 230191920 is 29191032.

230191920 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17797 + ... + 27876.

Almost surely, 2^230191920 is an apocalyptic number.

230191920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230191920 is an abundant number, since it is smaller than the sum of its proper divisors (653325936).

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

230191920 is a wasteful number, since it uses less digits than its factorization.

230191920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45699 (or 45690 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 230191920 is about 15172.0769837224. The cubic root of 230191920 is about 612.8629374739.

The spelling of 230191920 in words is "two hundred thirty million, one hundred ninety-one thousand, nine hundred twenty".