30212500 has 36 divisors (see below), whose sum is σ = 66112956. Its totient is φ = 12080000.

The previous prime is 30212467. The next prime is 30212513. The reversal of 30212500 is 521203.

It can be written as a sum of positive squares in 6 ways, for example, as 16418704 + 13793796 = 4052^2 + 3714^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11292 + ... + 13708.

It is an arithmetic number, because the mean of its divisors is an integer number (1836471).

Almost surely, 2^30212500 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 30212500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33056478).

30212500 is an abundant number, since it is smaller than the sum of its proper divisors (35900456).

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

30212500 is an equidigital number, since it uses as much as digits as its factorization.

30212500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446 (or 2424 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 30212500 is about 5496.5898518991. The cubic root of 30212500 is about 311.4551772653.

Adding to 30212500 its reverse (521203), we get a palindrome (30733703).

The spelling of 30212500 in words is "thirty million, two hundred twelve thousand, five hundred".