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30188060 = 2257383563
BaseRepresentation
bin111001100101…
…0001000011100
32002210201020022
41303022020130
530212004220
62555011312
7514410560
oct163121034
962721208
1030188060
1116049811
12a139b38
13633c776
14401b6a0
1529b4925
hex1cca21c

30188060 has 48 divisors (see below), whose sum is σ = 72769536. Its totient is φ = 10304832.

The previous prime is 30188051. The next prime is 30188069. The reversal of 30188060 is 6088103.

It is an interprime number because it is at equal distance from previous prime (30188051) and next prime (30188069).

It is a super-2 number, since 2×301880602 = 1822637933127200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30188069) 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, 53339 + ... + 53901.

It is an arithmetic number, because the mean of its divisors is an integer number (1516032).

Almost surely, 230188060 is an apocalyptic number.

It is an amenable number.

30188060 is an abundant number, since it is smaller than the sum of its proper divisors (42581476).

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

30188060 is a wasteful number, since it uses less digits than its factorization.

30188060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 30188060 is about 5494.3662054872. The cubic root of 30188060 is about 311.3711721020.

The spelling of 30188060 in words is "thirty million, one hundred eighty-eight thousand, sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 383 563 766 1126 1532 1915 2252 2681 2815 3830 3941 5362 5630 7660 7882 10724 11260 13405 15764 19705 26810 39410 53620 78820 215629 431258 862516 1078145 1509403 2156290 3018806 4312580 6037612 7547015 15094030 30188060