230187906 has 80 divisors (see below), whose sum is σ = 574774200. Its totient is φ = 68366592.

The previous prime is 230187883. The next prime is 230187911. The reversal of 230187906 is 609781032.

It can be written as a sum of positive squares in 4 ways, for example, as 195860025 + 34327881 = 13995^2 + 5859^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59190 + ... + 62958.

Almost surely, 2^230187906 is an apocalyptic number.

230187906 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 230187906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287387100).

230187906 is an abundant number, since it is smaller than the sum of its proper divisors (344586294).

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

230187906 is a wasteful number, since it uses less digits than its factorization.

230187906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3825 (or 3816 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 230187906 is about 15171.9447006638. The cubic root of 230187906 is about 612.8593751622.

The spelling of 230187906 in words is "two hundred thirty million, one hundred eighty-seven thousand, nine hundred six".