30201228 has 24 divisors (see below), whose sum is σ = 78299760. Its totient is φ = 10067040.

The previous prime is 30201221. The next prime is 30201229. The reversal of 30201228 is 82210203.

It is a happy number.

It is a super-2 number, since 2×30201228² = 1824228345415968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 30201228.

It is not an unprimeable number, because it can be changed into a prime (30201221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 139713 + ... + 139928.

It is an arithmetic number, because the mean of its divisors is an integer number (3262490).

Almost surely, 2^30201228 is an apocalyptic number.

It is an amenable number.

30201228 is an abundant number, since it is smaller than the sum of its proper divisors (48098532).

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

30201228 is a wasteful number, since it uses less digits than its factorization.

30201228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279654 (or 279646 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 30201228 is about 5495.5643932175. The cubic root of 30201228 is about 311.4164387801.

The spelling of 30201228 in words is "thirty million, two hundred one thousand, two hundred twenty-eight".