30684425 has 24 divisors (see below), whose sum is σ = 39372480. Its totient is φ = 23710400.

The previous prime is 30684419. The next prime is 30684427. The reversal of 30684425 is 52448603.

It is not a de Polignac number, because 30684425 - 2¹² = 30680329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30684391 and 30684400.

It is not an unprimeable number, because it can be changed into a prime (30684427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104579 + ... + 104871.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^30684425 is an apocalyptic number.

It is an amenable number.

30684425 is a deficient number, since it is larger than the sum of its proper divisors (8688055).

30684425 is a wasteful number, since it uses less digits than its factorization.

30684425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 30684425 is about 5539.3523989723. The cubic root of 30684425 is about 313.0684692696.

The spelling of 30684425 in words is "thirty million, six hundred eighty-four thousand, four hundred twenty-five".