30020120 has 32 divisors (see below), whose sum is σ = 72742320. Its totient is φ = 11084160.

The previous prime is 30020119. The next prime is 30020173. The reversal of 30020120 is 2102003.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 30020098 and 30020107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28346 + ... + 29385.

Almost surely, 2^30020120 is an apocalyptic number.

It is an amenable number.

30020120 is an abundant number, since it is smaller than the sum of its proper divisors (42722200).

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

30020120 is a wasteful number, since it uses less digits than its factorization.

30020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57755 (or 57751 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 30020120 is about 5479.0619635116. The cubic root of 30020120 is about 310.7926989810.

Adding to 30020120 its reverse (2102003), we get a palindrome (32122123).

The spelling of 30020120 in words is "thirty million, twenty thousand, one hundred twenty".