30840530 has 16 divisors (see below), whose sum is σ = 63443520. Its totient is φ = 10573872.

The previous prime is 30840521. The next prime is 30840583. The reversal of 30840530 is 3504803.

It is a super-2 number, since 2×30840530² = 1902276581361800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30840496 and 30840505.

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, 220220 + ... + 220359.

It is an arithmetic number, because the mean of its divisors is an integer number (3965220).

Almost surely, 2^30840530 is an apocalyptic number.

30840530 is an abundant number, since it is smaller than the sum of its proper divisors (32602990).

30840530 is a wasteful number, since it uses less digits than its factorization.

30840530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440593.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30840530 is about 5553.4250692703. The cubic root of 30840530 is about 313.5984765931.

The spelling of 30840530 in words is "thirty million, eight hundred forty thousand, five hundred thirty".