30117020 has 12 divisors (see below), whose sum is σ = 63245784. Its totient is φ = 12046800.

The previous prime is 30117019. The next prime is 30117023. The reversal of 30117020 is 2071103.

It is a junction number, because it is equal to n+sod(n) for n = 30116986 and 30117004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30117023) 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, 752906 + ... + 752945.

It is an arithmetic number, because the mean of its divisors is an integer number (5270482).

Almost surely, 2^30117020 is an apocalyptic number.

It is an amenable number.

30117020 is an abundant number, since it is smaller than the sum of its proper divisors (33128764).

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

30117020 is a wasteful number, since it uses less digits than its factorization.

30117020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505860 (or 1505858 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 30117020 is about 5487.8975937967. The cubic root of 30117020 is about 311.1267357043.

Adding to 30117020 its reverse (2071103), we get a palindrome (32188123).

The spelling of 30117020 in words is "thirty million, one hundred seventeen thousand, twenty".