30212280 has 192 divisors, whose sum is σ = 118310400. Its totient is φ = 6531840.

The previous prime is 30212251. The next prime is 30212311. The reversal of 30212280 is 8221203.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47565 + ... + 48195.

It is an arithmetic number, because the mean of its divisors is an integer number (616200).

Almost surely, 2^30212280 is an apocalyptic number.

30212280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30212280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59155200).

30212280 is an abundant number, since it is smaller than the sum of its proper divisors (88098120).

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

30212280 is a wasteful number, since it uses less digits than its factorization.

30212280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 667 counting only the distinct ones).

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

The square root of 30212280 is about 5496.5698394544. The cubic root of 30212280 is about 311.4544212835.

Adding to 30212280 its reverse (8221203), we get a palindrome (38433483).

The spelling of 30212280 in words is "thirty million, two hundred twelve thousand, two hundred eighty".