30349992 has 96 divisors (see below), whose sum is σ = 83393280. Its totient is φ = 9192960.

The previous prime is 30349951. The next prime is 30349993. The reversal of 30349992 is 29994303.

It is a super-2 number, since 2×30349992² = 1842244028800128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30349992.

It is not an unprimeable number, because it can be changed into a prime (30349993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268528 + ... + 268640.

It is an arithmetic number, because the mean of its divisors is an integer number (868680).

Almost surely, 2^30349992 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 30349992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41696640).

30349992 is an abundant number, since it is smaller than the sum of its proper divisors (53043288).

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

30349992 is a wasteful number, since it uses less digits than its factorization.

30349992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 30349992 is about 5509.0826822621. The cubic root of 30349992 is about 311.9269223984.

The spelling of 30349992 in words is "thirty million, three hundred forty-nine thousand, nine hundred ninety-two".