30312250 has 64 divisors (see below), whose sum is σ = 60821280. Its totient is φ = 11289600.

The previous prime is 30312211. The next prime is 30312263. The reversal of 30312250 is 5221303.

It can be written as a sum of positive squares in 16 ways, for example, as 2634129 + 27678121 = 1623^2 + 5261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 268194 + ... + 268306.

Almost surely, 2^30312250 is an apocalyptic number.

30312250 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

30312250 is a wasteful number, since it uses less digits than its factorization.

30312250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 30312250 is about 5505.6561825090. The cubic root of 30312250 is about 311.7975689396.

Adding to 30312250 its reverse (5221303), we get a palindrome (35533553).

The spelling of 30312250 in words is "thirty million, three hundred twelve thousand, two hundred fifty".