30280120 has 32 divisors (see below), whose sum is σ = 73372320. Its totient is φ = 11180160.

The previous prime is 30280109. The next prime is 30280139. The reversal of 30280120 is 2108203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30280094 and 30280103.

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, 28596 + ... + 29635.

It is an arithmetic number, because the mean of its divisors is an integer number (2292885).

Almost surely, 2^30280120 is an apocalyptic number.

It is an amenable number.

30280120 is an abundant number, since it is smaller than the sum of its proper divisors (43092200).

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

30280120 is a wasteful number, since it uses less digits than its factorization.

30280120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58255 (or 58251 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 30280120 is about 5502.7375005537. The cubic root of 30280120 is about 311.6873648958.

Adding to 30280120 its reverse (2108203), we get a palindrome (32388323).

The spelling of 30280120 in words is "thirty million, two hundred eighty thousand, one hundred twenty".