30900224 has 64 divisors (see below), whose sum is σ = 66059280. Its totient is φ = 14417920.

The previous prime is 30900193. The next prime is 30900229. The reversal of 30900224 is 42200903.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 30900196 and 30900205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30900229) 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, 753644 + ... + 753684.

Almost surely, 2^30900224 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 30900224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33029640).

30900224 is an abundant number, since it is smaller than the sum of its proper divisors (35159056).

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

30900224 is an frugal number, since it uses more digits than its factorization.

30900224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30900224 is about 5558.7969921558. The cubic root of 30900224 is about 313.8006767769.

The spelling of 30900224 in words is "thirty million, nine hundred thousand, two hundred twenty-four".