30093820 has 12 divisors (see below), whose sum is σ = 63197064. Its totient is φ = 12037520.

The previous prime is 30093809. The next prime is 30093823. The reversal of 30093820 is 2839003.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30093823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752326 + ... + 752365.

It is an arithmetic number, because the mean of its divisors is an integer number (5266422).

Almost surely, 2^30093820 is an apocalyptic number.

It is an amenable number.

30093820 is an abundant number, since it is smaller than the sum of its proper divisors (33103244).

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

30093820 is a wasteful number, since it uses less digits than its factorization.

30093820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504700 (or 1504698 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 30093820 is about 5485.7834445045. The cubic root of 30093820 is about 311.0468252472.

The spelling of 30093820 in words is "thirty million, ninety-three thousand, eight hundred twenty".