30220288 has 112 divisors (see below), whose sum is σ = 75492864. Its totient is φ = 11796480.

The previous prime is 30220277. The next prime is 30220327. The reversal of 30220288 is 88202203.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 974833 + ... + 974863.

Almost surely, 2^30220288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30220288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37746432).

30220288 is an abundant number, since it is smaller than the sum of its proper divisors (45272576).

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

30220288 is an equidigital number, since it uses as much as digits as its factorization.

30220288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 30220288 is about 5497.2982455021. The cubic root of 30220288 is about 311.4819366588.

The spelling of 30220288 in words is "thirty million, two hundred twenty thousand, two hundred eighty-eight".