30849280 has 144 divisors (see below), whose sum is σ = 92421504. Its totient is φ = 9584640.

The previous prime is 30849257. The next prime is 30849281. The reversal of 30849280 is 8294803.

It is not an unprimeable number, because it can be changed into a prime (30849281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98404 + ... + 98716.

It is an arithmetic number, because the mean of its divisors is an integer number (641816).

Almost surely, 2^30849280 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 30849280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46210752).

30849280 is an abundant number, since it is smaller than the sum of its proper divisors (61572224).

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

30849280 is a wasteful number, since it uses less digits than its factorization.

30849280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 30849280 is about 5554.2128155122. The cubic root of 30849280 is about 313.6281315872.

The spelling of 30849280 in words is "thirty million, eight hundred forty-nine thousand, two hundred eighty".