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20767030160 = 2451012570177
BaseRepresentation
bin10011010101110011…
…111011101110010000
31222121021211102211012
4103111303323232100
5320012324431120
613312405310052
71333424562302
oct232563735620
958537742735
1020767030160
1188974a1148
124036a05328
131c5c585b36
14101010b972
1581827e1c5
hex4d5cfbb90

20767030160 has 40 divisors (see below), whose sum is σ = 48761417016. Its totient is φ = 8224563200.

The previous prime is 20767030157. The next prime is 20767030177. The reversal of 20767030160 is 6103076702.

It can be written as a sum of positive squares in 4 ways, for example, as 6154088704 + 14612941456 = 78448^2 + 120884^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277009 + ... + 1293168.

Almost surely, 220767030160 is an apocalyptic number.

20767030160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20767030160 is an abundant number, since it is smaller than the sum of its proper divisors (27994386856).

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

20767030160 is a wasteful number, since it uses less digits than its factorization.

20767030160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570291 (or 2570285 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The spelling of 20767030160 in words is "twenty billion, seven hundred sixty-seven million, thirty thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 40 80 101 202 404 505 808 1010 1616 2020 4040 8080 2570177 5140354 10280708 12850885 20561416 25701770 41122832 51403540 102807080 205614160 259587877 519175754 1038351508 1297939385 2076703016 2595878770 4153406032 5191757540 10383515080 20767030160