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20798237676 = 2236139771569
BaseRepresentation
bin10011010111101010…
…111110101111101100
31222200110112221111010
4103113222332233230
5320043322101201
613315442225220
71334254050306
oct232752765754
958613487433
1020798237676
118903076887
124045355210
131c65b91618
141014312976
1581ad95bd6
hex4d7abebec

20798237676 has 48 divisors (see below), whose sum is σ = 49449716960. Its totient is φ = 6801822720.

The previous prime is 20798237659. The next prime is 20798237701. The reversal of 20798237676 is 67673289702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254820 + ... + 326388.

Almost surely, 220798237676 is an apocalyptic number.

It is an amenable number.

20798237676 is an abundant number, since it is smaller than the sum of its proper divisors (28651479284).

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

20798237676 is a wasteful number, since it uses less digits than its factorization.

20798237676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72034 (or 72032 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 20798237676 in words is "twenty billion, seven hundred ninety-eight million, two hundred thirty-seven thousand, six hundred seventy-six".

Divisors: 1 2 3 4 6 12 61 122 183 244 366 397 732 794 1191 1588 2382 4764 24217 48434 71569 72651 96868 143138 145302 214707 286276 290604 429414 858828 4365709 8731418 13097127 17462836 26194254 28412893 52388508 56825786 85238679 113651572 170477358 340954716 1733186473 3466372946 5199559419 6932745892 10399118838 20798237676