230997228 has 72 divisors (see below), whose sum is σ = 677112576. Its totient is φ = 59996640.

The previous prime is 230997223. The next prime is 230997259. The reversal of 230997228 is 822799032.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 230997228.

It is not an unprimeable number, because it can be changed into a prime (230997223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200 + ... + 21527.

Almost surely, 2^230997228 is an apocalyptic number.

230997228 is a gapful number since it is divisible by the number (28) 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 230997228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338556288).

230997228 is an abundant number, since it is smaller than the sum of its proper divisors (446115348).

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

230997228 is a wasteful number, since it uses less digits than its factorization.

230997228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22763 (or 22750 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 230997228 is about 15198.5929611922. The cubic root of 230997228 is about 613.5767896394.

The spelling of 230997228 in words is "two hundred thirty million, nine hundred ninety-seven thousand, two hundred twenty-eight".