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206080268420 = 225131316050507
BaseRepresentation
bin1011111111101101010…
…1110101100010000100
3201200221002101022202002
42333323111311202010
511334023022042140
6234401051204432
720613601244045
oct2777325654204
9650832338662
10206080268420
117a441a36924
1233b33a46718
1316582c10540
149d8d8268cc
155562165415
hex2ffb575884

206080268420 has 48 divisors (see below), whose sum is σ = 469616228928. Its totient is φ = 75510314880.

The previous prime is 206080268351. The next prime is 206080268431. The reversal of 206080268420 is 24862080602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2991194 + ... + 3059313.

It is an arithmetic number, because the mean of its divisors is an integer number (9783671436).

Almost surely, 2206080268420 is an apocalyptic number.

206080268420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206080268420 is an abundant number, since it is smaller than the sum of its proper divisors (263535960508).

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

206080268420 is a wasteful number, since it uses less digits than its factorization.

206080268420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050660 (or 6050658 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 206080268420 in words is "two hundred six billion, eighty million, two hundred sixty-eight thousand, four hundred twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 131 260 262 524 655 1310 1703 2620 3406 6812 8515 17030 34060 6050507 12101014 24202028 30252535 60505070 78656591 121010140 157313182 314626364 393282955 786565910 792616417 1573131820 1585232834 3170465668 3963082085 7926164170 10304013421 15852328340 20608026842 41216053684 51520067105 103040134210 206080268420