30468820 has 12 divisors (see below), whose sum is σ = 63984564. Its totient is φ = 12187520.

The previous prime is 30468803. The next prime is 30468827. The reversal of 30468820 is 2886403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17422276 + 13046544 = 4174^2 + 3612^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30468827) 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 3 ways as a sum of consecutive naturals, for example, 761701 + ... + 761740.

It is an arithmetic number, because the mean of its divisors is an integer number (5332047).

Almost surely, 2^30468820 is an apocalyptic number.

It is an amenable number.

30468820 is an abundant number, since it is smaller than the sum of its proper divisors (33515744).

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

30468820 is a wasteful number, since it uses less digits than its factorization.

30468820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523450 (or 1523448 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30468820 is about 5519.8568822027. The cubic root of 30468820 is about 312.3334835537. Note that the first 3 decimals are identical.

The spelling of 30468820 in words is "thirty million, four hundred sixty-eight thousand, eight hundred twenty".