30484220 has 72 divisors (see below), whose sum is σ = 71940960. Its totient is φ = 10832640.

The previous prime is 30484217. The next prime is 30484261. The reversal of 30484220 is 2248403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97865 + ... + 98175.

It is an arithmetic number, because the mean of its divisors is an integer number (999180).

Almost surely, 2^30484220 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 30484220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35970480).

30484220 is an abundant number, since it is smaller than the sum of its proper divisors (41456740).

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

30484220 is a wasteful number, since it uses less digits than its factorization.

30484220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 30484220 is about 5521.2516696851. The cubic root of 30484220 is about 312.3860960879.

The spelling of 30484220 in words is "thirty million, four hundred eighty-four thousand, two hundred twenty".