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30057900 = 22352100193
BaseRepresentation
bin111001010101…
…0010110101100
32002120002200120
41302222112230
530143323100
62552124540
7513326235
oct162522654
962502616
1030057900
1115a6aa44
12a096750
1362c5452
143dc608c
15298b0a0
hex1caa5ac

30057900 has 36 divisors (see below), whose sum is σ = 86968392. Its totient is φ = 8015360.

The previous prime is 30057899. The next prime is 30057901. The reversal of 30057900 is 975003.

It is an interprime number because it is at equal distance from previous prime (30057899) and next prime (30057901).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30057901) 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 11 ways as a sum of consecutive naturals, for example, 49797 + ... + 50396.

Almost surely, 230057900 is an apocalyptic number.

30057900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30057900 is an abundant number, since it is smaller than the sum of its proper divisors (56910492).

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

30057900 is a wasteful number, since it uses less digits than its factorization.

30057900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100210 (or 100203 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 30057900 is about 5482.5085499249. The cubic root of 30057900 is about 310.9230207562.

The spelling of 30057900 in words is "thirty million, fifty-seven thousand, nine hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 150 300 100193 200386 300579 400772 500965 601158 1001930 1202316 1502895 2003860 2504825 3005790 5009650 6011580 7514475 10019300 15028950 30057900