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30845030 = 259731799
BaseRepresentation
bin111010110101…
…0100001100110
32011001002102112
41311222201212
530344020110
63021041022
7523115126
oct165524146
964032375
1030845030
1116458367
12a3b6172
13650c7c8
14414cc86
152a94405
hex1d6a866

30845030 has 16 divisors (see below), whose sum is σ = 56095200. Its totient is φ = 12210432.

The previous prime is 30845011. The next prime is 30845033. The reversal of 30845030 is 3054803.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30844987 and 30845005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30845033) 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 7 ways as a sum of consecutive naturals, for example, 14930 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (3505950).

Almost surely, 230845030 is an apocalyptic number.

30845030 is a deficient number, since it is larger than the sum of its proper divisors (25250170).

30845030 is a wasteful number, since it uses less digits than its factorization.

30845030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31903.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30845030 is about 5553.8302098642. The cubic root of 30845030 is about 313.6137284333.

Adding to 30845030 its reverse (3054803), we get a palindrome (33899833).

The spelling of 30845030 in words is "thirty million, eight hundred forty-five thousand, thirty".

Divisors: 1 2 5 10 97 194 485 970 31799 63598 158995 317990 3084503 6169006 15422515 30845030