30081020 has 24 divisors (see below), whose sum is σ = 63277200. Its totient is φ = 12012032.

The previous prime is 30081019. The next prime is 30081031. The reversal of 30081020 is 2018003.

It is a junction number, because it is equal to n+sod(n) for n = 30080986 and 30081004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17771 + ... + 19389.

It is an arithmetic number, because the mean of its divisors is an integer number (2636550).

Almost surely, 2^30081020 is an apocalyptic number.

It is an amenable number.

30081020 is an abundant number, since it is smaller than the sum of its proper divisors (33196180).

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

30081020 is a wasteful number, since it uses less digits than its factorization.

30081020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 30081020 is about 5484.6166684646. The cubic root of 30081020 is about 311.0027191375.

Adding to 30081020 its reverse (2018003), we get a palindrome (32099023).

The spelling of 30081020 in words is "thirty million, eighty-one thousand, twenty".