30678125 has 12 divisors (see below), whose sum is σ = 38349108. Its totient is φ = 24540000.

The previous prime is 30678119. The next prime is 30678133. The reversal of 30678125 is 52187603.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 15413476 + 15264649 = 3926^2 + 3907^2 .

It is not a de Polignac number, because 30678125 - 2⁶ = 30678061 is a prime.

It is a super-2 number, since 2×30678125² = 1882294707031250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30678091 and 30678100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1784 + ... + 8033.

It is an arithmetic number, because the mean of its divisors is an integer number (3195759).

Almost surely, 2^30678125 is an apocalyptic number.

It is an amenable number.

30678125 is a deficient number, since it is larger than the sum of its proper divisors (7670983).

30678125 is an frugal number, since it uses more digits than its factorization.

30678125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9842 (or 9822 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 30678125 is about 5538.7837112492. The cubic root of 30678125 is about 313.0470418260.

It can be divided in two parts, 30678 and 125, that added together give a palindrome (30803).

The spelling of 30678125 in words is "thirty million, six hundred seventy-eight thousand, one hundred twenty-five".