30047725 has 6 divisors (see below), whose sum is σ = 37259210. Its totient is φ = 24038160.

The previous prime is 30047723. The next prime is 30047753. The reversal of 30047725 is 52774003.

It can be written as a sum of positive squares in 3 ways, for example, as 170569 + 29877156 = 413^2 + 5466^2 .

It is not a de Polignac number, because 30047725 - 2¹ = 30047723 is a prime.

It is a super-4 number, since 4×30047725⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30047693 and 30047702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30047723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600930 + ... + 600979.

Almost surely, 2^30047725 is an apocalyptic number.

It is an amenable number.

30047725 is a deficient number, since it is larger than the sum of its proper divisors (7211485).

30047725 is a wasteful number, since it uses less digits than its factorization.

30047725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201919 (or 1201914 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 30047725 is about 5481.5805202514. The cubic root of 30047725 is about 310.8879329337.

The spelling of 30047725 in words is "thirty million, forty-seven thousand, seven hundred twenty-five".