30835812 has 48 divisors (see below), whose sum is σ = 83471360. Its totient is φ = 8677152.

The previous prime is 30835811. The next prime is 30835867. The reversal of 30835812 is 21853803.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 30835812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30835811) 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, 2889 + ... + 8367.

Almost surely, 2^30835812 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 30835812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41735680).

30835812 is an abundant number, since it is smaller than the sum of its proper divisors (52635548).

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

30835812 is a wasteful number, since it uses less digits than its factorization.

30835812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560 (or 5558 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 30835812 is about 5553.0002701243. Note that the first 3 decimals coincide. The cubic root of 30835812 is about 313.5824842926.

Subtracting from 30835812 its reverse (21853803), we obtain a square (8982009 = 2997²).

The spelling of 30835812 in words is "thirty million, eight hundred thirty-five thousand, eight hundred twelve".