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30052825 = 52111031061
BaseRepresentation
bin111001010100…
…1000111011001
32002112211201121
41302221013121
530143142300
62552045241
7513305365
oct162510731
962484647
1030052825
1115a67150
12a093821
1362c304a
143dc42a5
15298981a
hex1ca91d9

30052825 has 24 divisors (see below), whose sum is σ = 41086656. Its totient is φ = 21624000.

The previous prime is 30052823. The next prime is 30052837. The reversal of 30052825 is 52825003.

It is not a de Polignac number, because 30052825 - 21 = 30052823 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30052825.

It is not an unprimeable number, because it can be changed into a prime (30052823) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 27795 + ... + 28855.

It is an arithmetic number, because the mean of its divisors is an integer number (1711944).

Almost surely, 230052825 is an apocalyptic number.

It is an amenable number.

30052825 is a deficient number, since it is larger than the sum of its proper divisors (11033831).

30052825 is a wasteful number, since it uses less digits than its factorization.

30052825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 30052825 is about 5482.0456948114. The cubic root of 30052825 is about 310.9055209403.

Adding to 30052825 its reverse (52825003), we get a palindrome (82877828).

The spelling of 30052825 in words is "thirty million, fifty-two thousand, eight hundred twenty-five".

Divisors: 1 5 11 25 55 103 275 515 1061 1133 2575 5305 5665 11671 26525 28325 58355 109283 291775 546415 1202113 2732075 6010565 30052825