30147312 has 40 divisors (see below), whose sum is σ = 83873104. Its totient is φ = 9275904.

The previous prime is 30147311. The next prime is 30147347. The reversal of 30147312 is 21374103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30147311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23533 + ... + 24780.

Almost surely, 2^30147312 is an apocalyptic number.

It is an amenable number.

30147312 is an abundant number, since it is smaller than the sum of its proper divisors (53725792).

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

30147312 is a wasteful number, since it uses less digits than its factorization.

30147312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48337 (or 48331 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 30147312 is about 5490.6567913138. The cubic root of 30147312 is about 311.2310122124.

The spelling of 30147312 in words is "thirty million, one hundred forty-seven thousand, three hundred twelve".