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30068541 = 323340949
BaseRepresentation
bin111001010110…
…0111100111101
32002120122021200
41302230330331
530144143131
62552250113
7513402246
oct162547475
962518250
1030068541
1115a77a38
12a0a0939
1362ca249
143dc9ccd
15298e2e6
hex1cacf3d

30068541 has 6 divisors (see below), whose sum is σ = 43432350. Its totient is φ = 20045688.

The previous prime is 30068537. The next prime is 30068569. The reversal of 30068541 is 14586003.

It can be written as a sum of positive squares in only one way, i.e., 25100100 + 4968441 = 5010^2 + 2229^2 .

It is not a de Polignac number, because 30068541 - 22 = 30068537 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30068581) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1670466 + ... + 1670483.

It is an arithmetic number, because the mean of its divisors is an integer number (7238725).

Almost surely, 230068541 is an apocalyptic number.

It is an amenable number.

30068541 is a deficient number, since it is larger than the sum of its proper divisors (13363809).

30068541 is a wasteful number, since it uses less digits than its factorization.

30068541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340955 (or 3340952 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30068541 is about 5483.4789139742. The cubic root of 30068541 is about 310.9597070795.

The spelling of 30068541 in words is "thirty million, sixty-eight thousand, five hundred forty-one".

Divisors: 1 3 9 3340949 10022847 30068541