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20826170080 = 255137950099
BaseRepresentation
bin10011011001010101…
…100010001011100000
31222202102010001112121
4103121111202023200
5320122444420310
613322321034024
71335043345012
oct233125421340
958672101477
1020826170080
118917914911
124052785914
131c6b8c1481
141017d041b2
1581d5620da
hex4d95622e0

20826170080 has 48 divisors (see below), whose sum is σ = 49561016400. Its totient is φ = 8269652992.

The previous prime is 20826170077. The next prime is 20826170087. The reversal of 20826170080 is 8007162802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826170087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453130 + ... + 496969.

It is an arithmetic number, because the mean of its divisors is an integer number (1032521175).

Almost surely, 220826170080 is an apocalyptic number.

20826170080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20826170080 is an abundant number, since it is smaller than the sum of its proper divisors (28734846320).

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

20826170080 is a wasteful number, since it uses less digits than its factorization.

20826170080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950251 (or 950243 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 20826170080 in words is "twenty billion, eight hundred twenty-six million, one hundred seventy thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 137 160 274 548 685 1096 1370 2192 2740 4384 5480 10960 21920 950099 1900198 3800396 4750495 7600792 9500990 15201584 19001980 30403168 38003960 76007920 130163563 152015840 260327126 520654252 650817815 1041308504 1301635630 2082617008 2603271260 4165234016 5206542520 10413085040 20826170080