30930530 has 16 divisors (see below), whose sum is σ = 57595320. Its totient is φ = 11945472.

The previous prime is 30930521. The next prime is 30930533. The reversal of 30930530 is 3503903.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29888089 + 1042441 = 5467^2 + 1021^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30930496 and 30930505.

It is not an unprimeable number, because it can be changed into a prime (30930533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53039 + ... + 53618.

Almost surely, 2^30930530 is an apocalyptic number.

30930530 is a deficient number, since it is larger than the sum of its proper divisors (26664790).

30930530 is a wasteful number, since it uses less digits than its factorization.

30930530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106693.

The product of its (nonzero) digits is 1215, while the sum is 23.

The square root of 30930530 is about 5561.5222736226. The cubic root of 30930530 is about 313.9032319769.

The spelling of 30930530 in words is "thirty million, nine hundred thirty thousand, five hundred thirty".