230891984 has 20 divisors (see below), whose sum is σ = 447589284. Its totient is φ = 115385088.

The previous prime is 230891981. The next prime is 230891993. The reversal of 230891984 is 489198032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68890000 + 162001984 = 8300^2 + 12728^2 .

It is a super-2 number, since 2×230891984² = 106622216550912512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230891981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54884 + ... + 58940.

Almost surely, 2^230891984 is an apocalyptic number.

It is an amenable number.

230891984 is a deficient number, since it is larger than the sum of its proper divisors (216697300).

230891984 is a wasteful number, since it uses less digits than its factorization.

230891984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622 (or 7616 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 230891984 is about 15195.1302725577. The cubic root of 230891984 is about 613.4835921500.

The spelling of 230891984 in words is "two hundred thirty million, eight hundred ninety-one thousand, nine hundred eighty-four".