30055312 has 40 divisors (see below), whose sum is σ = 67106816. Its totient is φ = 12773376.

The previous prime is 30055309. The next prime is 30055343. The reversal of 30055312 is 21355003.

It is a self number, because there is not a number n which added to its sum of digits gives 30055312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13168 + ... + 15280.

Almost surely, 2^30055312 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 30055312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33553408).

30055312 is an abundant number, since it is smaller than the sum of its proper divisors (37051504).

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

30055312 is a wasteful number, since it uses less digits than its factorization.

30055312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2249 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30055312 is about 5482.2725215006. The cubic root of 30055312 is about 310.9140969583.

The spelling of 30055312 in words is "thirty million, fifty-five thousand, three hundred twelve".