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30006916 = 2241182969
BaseRepresentation
bin111001001110…
…1111010000100
32002110111202021
41302131322010
530140210131
62551052524
7513024502
oct162357204
962414667
1030006916
1115a35705
12a071144
1362a8194
143db1672
15297ae11
hex1c9de84

30006916 has 12 divisors (see below), whose sum is σ = 53793180. Its totient is φ = 14637440.

The previous prime is 30006913. The next prime is 30006917. The reversal of 30006916 is 61960003.

It can be written as a sum of positive squares in 2 ways, for example, as 10240000 + 19766916 = 3200^2 + 4446^2 .

It is not an unprimeable number, because it can be changed into a prime (30006913) 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 3 ways as a sum of consecutive naturals, for example, 91321 + ... + 91648.

It is an arithmetic number, because the mean of its divisors is an integer number (4482765).

Almost surely, 230006916 is an apocalyptic number.

It is an amenable number.

30006916 is a deficient number, since it is larger than the sum of its proper divisors (23786264).

30006916 is a wasteful number, since it uses less digits than its factorization.

30006916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183014 (or 183012 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 30006916 is about 5477.8568802042. The cubic root of 30006916 is about 310.7471261163.

Adding to 30006916 its reverse (61960003), we get a palindrome (91966919).

The spelling of 30006916 in words is "thirty million, six thousand, nine hundred sixteen".

Divisors: 1 2 4 41 82 164 182969 365938 731876 7501729 15003458 30006916