30128230 has 32 divisors (see below), whose sum is σ = 59927040. Its totient is φ = 10813920.

The previous prime is 30128209. The next prime is 30128239. The reversal of 30128230 is 3282103.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30128198 and 30128207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30128239) 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, 6957 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (1872720).

Almost surely, 2^30128230 is an apocalyptic number.

30128230 is a deficient number, since it is larger than the sum of its proper divisors (29798810).

30128230 is a wasteful number, since it uses less digits than its factorization.

30128230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30128230 is about 5488.9188370753. The cubic root of 30128230 is about 311.1653329058.

The spelling of 30128230 in words is "thirty million, one hundred twenty-eight thousand, two hundred thirty".