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30166540 = 22553149191
BaseRepresentation
bin111001100010…
…0111000001100
32002202121201021
41303010320030
530210312130
62554323524
7514261045
oct163047014
962677637
1030166540
1116034628
12a1295a4
136332a31
1440138cc
1529ad37a
hex1cc4e0c

30166540 has 48 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 11697920.

The previous prime is 30166531. The next prime is 30166541. The reversal of 30166540 is 4566103.

It is not an unprimeable number, because it can be changed into a prime (30166541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157845 + ... + 158035.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 230166540 is an apocalyptic number.

It is an amenable number.

30166540 is an abundant number, since it is smaller than the sum of its proper divisors (35151860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30166540 is a wasteful number, since it uses less digits than its factorization.

30166540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30166540 is about 5492.4074867038. The cubic root of 30166540 is about 311.2971660161.

The spelling of 30166540 in words is "thirty million, one hundred sixty-six thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 53 106 149 191 212 265 298 382 530 596 745 764 955 1060 1490 1910 2980 3820 7897 10123 15794 20246 28459 31588 39485 40492 50615 56918 78970 101230 113836 142295 157940 202460 284590 569180 1508327 3016654 6033308 7541635 15083270 30166540