30200128 has 28 divisors (see below), whose sum is σ = 68490592. Its totient is φ = 12942720.

The previous prime is 30200119. The next prime is 30200129. The reversal of 30200128 is 82100203.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30200129) 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, 33258 + ... + 34153.

Almost surely, 2^30200128 is an apocalyptic number.

It is an amenable number.

30200128 is an abundant number, since it is smaller than the sum of its proper divisors (38290464).

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

30200128 is an equidigital number, since it uses as much as digits as its factorization.

30200128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67430 (or 67420 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 30200128 is about 5495.4643115937. The cubic root of 30200128 is about 311.4126578936.

The spelling of 30200128 in words is "thirty million, two hundred thousand, one hundred twenty-eight".