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30344525 = 521213781
BaseRepresentation
bin111001111000…
…0010101001101
32010002122212022
41303300111031
530232011100
63002215525
7515632001
oct163602515
963078768
1030344525
1116146322
12a1b45a5
136395a53
14405c701
1529e5e85
hex1cf054d

30344525 has 6 divisors (see below), whose sum is σ = 37627242. Its totient is φ = 24275600.

The previous prime is 30344513. The next prime is 30344533. The reversal of 30344525 is 52544303.

It can be written as a sum of positive squares in 3 ways, for example, as 2328676 + 28015849 = 1526^2 + 5293^2 .

It is a de Polignac number, because none of the positive numbers 2k-30344525 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30344494 and 30344503.

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 5 ways as a sum of consecutive naturals, for example, 606866 + ... + 606915.

It is an arithmetic number, because the mean of its divisors is an integer number (6271207).

Almost surely, 230344525 is an apocalyptic number.

It is an amenable number.

30344525 is a deficient number, since it is larger than the sum of its proper divisors (7282717).

30344525 is a wasteful number, since it uses less digits than its factorization.

30344525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213791 (or 1213786 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 30344525 is about 5508.5864793066. The cubic root of 30344525 is about 311.9081919498.

Adding to 30344525 its reverse (52544303), we get a palindrome (82888828).

The spelling of 30344525 in words is "thirty million, three hundred forty-four thousand, five hundred twenty-five".

Divisors: 1 5 25 1213781 6068905 30344525