30840192 has 96 divisors (see below), whose sum is σ = 93483000. Its totient is φ = 9732096.

The previous prime is 30840163. The next prime is 30840221. The reversal of 30840192 is 29104803.

It is an interprime number because it is at equal distance from previous prime (30840163) and next prime (30840221).

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

It is a super-2 number, since 2×30840192² = 1902234885193728, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 21184 + ... + 22592.

Almost surely, 2^30840192 is an apocalyptic number.

30840192 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 30840192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46741500).

30840192 is an abundant number, since it is smaller than the sum of its proper divisors (62642808).

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

30840192 is a wasteful number, since it uses less digits than its factorization.

30840192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30840192 is about 5553.3946375168. The cubic root of 30840192 is about 313.5973309505.

Adding to 30840192 its reverse (29104803), we get a palindrome (59944995).

The spelling of 30840192 in words is "thirty million, eight hundred forty thousand, one hundred ninety-two".