30032812 has 24 divisors (see below), whose sum is σ = 56839104. Its totient is φ = 13830912.

The previous prime is 30032771. The next prime is 30032813. The reversal of 30032812 is 21823003.

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 30032812.

It is not an unprimeable number, because it can be changed into a prime (30032813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (2368296).

Almost surely, 2^30032812 is an apocalyptic number.

It is an amenable number.

30032812 is a deficient number, since it is larger than the sum of its proper divisors (26806292).

30032812 is a wasteful number, since it uses less digits than its factorization.

30032812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465 (or 9463 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30032812 is about 5480.2200685739. The cubic root of 30032812 is about 310.8364921123.

Adding to 30032812 its reverse (21823003), we get a palindrome (51855815).

The spelling of 30032812 in words is "thirty million, thirty-two thousand, eight hundred twelve".