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20806122298 = 2131979914099
BaseRepresentation
bin10011011000001001…
…000011101100111010
31222201000101112011011
4103120021003230322
5320102331403143
613320323224134
71334411056453
oct233011035472
958630345134
1020806122298
1189075716a5
124047b1804a
131c676c2390
1410153a612a
1581b901e9d
hex4d8243b3a

20806122298 has 32 divisors (see below), whose sum is σ = 33822835200. Its totient is φ = 9542111040.

The previous prime is 20806122283. The next prime is 20806122343. The reversal of 20806122298 is 89222160802.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20806122298.

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, 5073853 + ... + 5077951.

It is an arithmetic number, because the mean of its divisors is an integer number (1056963600).

Almost surely, 220806122298 is an apocalyptic number.

20806122298 is a deficient number, since it is larger than the sum of its proper divisors (13016712902).

20806122298 is a wasteful number, since it uses less digits than its factorization.

20806122298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 20806122298 in words is "twenty billion, eight hundred six million, one hundred twenty-two thousand, two hundred ninety-eight".

Divisors: 1 2 13 26 197 394 991 1982 2561 4099 5122 8198 12883 25766 53287 106574 195227 390454 807503 1615006 2537951 4062109 5075902 8124218 10497539 20995078 52807417 105614834 800235473 1600470946 10403061149 20806122298