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297130020 = 223511240927
BaseRepresentation
bin10001101101011…
…101100000100100
3202201002202202120
4101231131200210
51102031130040
645252305540
710235364165
oct2155354044
9681082676
10297130020
111427a4200
12836122b0
13497346a5
142b66776c
151b1437d0
hex11b5d824

297130020 has 72 divisors (see below), whose sum is σ = 914495232. Its totient is φ = 72029760.

The previous prime is 297130013. The next prime is 297130021. The reversal of 297130020 is 20031792.

It is not an unprimeable number, because it can be changed into a prime (297130021) 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 23 ways as a sum of consecutive naturals, for example, 13204 + ... + 27723.

Almost surely, 2297130020 is an apocalyptic number.

297130020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

297130020 is an abundant number, since it is smaller than the sum of its proper divisors (617365212).

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

297130020 is a wasteful number, since it uses less digits than its factorization.

297130020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40961 (or 40948 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 297130020 is about 17237.4597896558. The cubic root of 297130020 is about 667.2913738730.

The spelling of 297130020 in words is "two hundred ninety-seven million, one hundred thirty thousand, twenty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 121 132 165 220 242 330 363 484 605 660 726 1210 1452 1815 2420 3630 7260 40927 81854 122781 163708 204635 245562 409270 450197 491124 613905 818540 900394 1227810 1350591 1800788 2250985 2455620 2701182 4501970 4952167 5402364 6752955 9003940 9904334 13505910 14856501 19808668 24760835 27011820 29713002 49521670 59426004 74282505 99043340 148565010 297130020