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30708853 = 737139853
BaseRepresentation
bin111010100100…
…1010001110101
32010210011121221
41311021101311
530330140403
63014110341
7522010120
oct165112165
963704557
1030708853
111637501a
12a34b3b1
136492826
1441153b7
152a68dbd
hex1d49475

30708853 has 16 divisors (see below), whose sum is σ = 36346240. Its totient is φ = 25396416.

The previous prime is 30708833. The next prime is 30708863. The reversal of 30708853 is 35880703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30708853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30708823) 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 15 ways as a sum of consecutive naturals, for example, 35575 + ... + 36427.

It is an arithmetic number, because the mean of its divisors is an integer number (2271640).

Almost surely, 230708853 is an apocalyptic number.

It is an amenable number.

30708853 is a deficient number, since it is larger than the sum of its proper divisors (5637387).

30708853 is a wasteful number, since it uses less digits than its factorization.

30708853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 30708853 is about 5541.5569111938. The cubic root of 30708853 is about 313.1515256087.

It can be divided in two parts, 30708 and 853, that multiplied together give a square (26193924 = 51182).

The spelling of 30708853 in words is "thirty million, seven hundred eight thousand, eight hundred fifty-three".

Divisors: 1 7 37 139 259 853 973 5143 5971 31561 36001 118567 220927 829969 4386979 30708853