30849312 has 96 divisors (see below), whose sum is σ = 91869120. Its totient is φ = 8985600.

The previous prime is 30849311. The next prime is 30849319. The reversal of 30849312 is 21394803.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 30849312.

It is not an unprimeable number, because it can be changed into a prime (30849311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23062 + ... + 24362.

It is an arithmetic number, because the mean of its divisors is an integer number (956970).

Almost surely, 2^30849312 is an apocalyptic number.

30849312 is a gapful number since it is divisible by the number (32) 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 30849312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45934560).

30849312 is an abundant number, since it is smaller than the sum of its proper divisors (61019808).

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

30849312 is a wasteful number, since it uses less digits than its factorization.

30849312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30849312 is about 5554.2156962077. The cubic root of 30849312 is about 313.6282400294.

It can be divided in two parts, 308493 and 12, that added together give a triangular number (308505 = T₇₈₅).

The spelling of 30849312 in words is "thirty million, eight hundred forty-nine thousand, three hundred twelve".