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30808325 = 525920887
BaseRepresentation
bin111010110000…
…1100100000101
32010222020002002
41311201210011
530341331300
63020155045
7522603122
oct165414405
963866062
1030808325
1116432829
12a398a85
1364c8ba2
14413d749
152a885d5
hex1d61905

30808325 has 12 divisors (see below), whose sum is σ = 38851680. Its totient is φ = 24227760.

The previous prime is 30808319. The next prime is 30808331. The reversal of 30808325 is 52380803.

It is an interprime number because it is at equal distance from previous prime (30808319) and next prime (30808331).

It is not a de Polignac number, because 30808325 - 218 = 30546181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8969 + ... + 11918.

It is an arithmetic number, because the mean of its divisors is an integer number (3237640).

Almost surely, 230808325 is an apocalyptic number.

It is an amenable number.

30808325 is a deficient number, since it is larger than the sum of its proper divisors (8043355).

30808325 is a wasteful number, since it uses less digits than its factorization.

30808325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20956 (or 20951 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 30808325 is about 5550.5247499673. The cubic root of 30808325 is about 313.4892809296.

The spelling of 30808325 in words is "thirty million, eight hundred eight thousand, three hundred twenty-five".

Divisors: 1 5 25 59 295 1475 20887 104435 522175 1232333 6161665 30808325