30849984 has 140 divisors (see below), whose sum is σ = 99946968. Its totient is φ = 9331200.

The previous prime is 30849953. The next prime is 30850007. The reversal of 30849984 is 48994803.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 56754 + ... + 57294.

Almost surely, 2^30849984 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 30849984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49973484).

30849984 is an abundant number, since it is smaller than the sum of its proper divisors (69096984).

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

30849984 is a wasteful number, since it uses less digits than its factorization.

30849984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 30849984 is about 5554.2761904680. The cubic root of 30849984 is about 313.6305172995.

The spelling of 30849984 in words is "thirty million, eight hundred forty-nine thousand, nine hundred eighty-four".