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6888899980 = 2253147236407
BaseRepresentation
bin1100110101001110…
…00100010110001100
3122210002200101012201
412122213010112030
5103102024244410
63055325011244
7332466453334
oct63247042614
918702611181
106888899980
112a15671576
1214030b3b24
1385a2a6ca1
14494cba0c4
152a4bc083a
hex19a9c458c

6888899980 has 48 divisors (see below), whose sum is σ = 15251152896. Its totient is φ = 2609922240.

The previous prime is 6888899971. The next prime is 6888899981. The reversal of 6888899980 is 899988886.

It is not an unprimeable number, because it can be changed into a prime (6888899981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89064 + ... + 147343.

It is an arithmetic number, because the mean of its divisors is an integer number (317732352).

Almost surely, 26888899980 is an apocalyptic number.

It is an amenable number.

6888899980 is an abundant number, since it is smaller than the sum of its proper divisors (8362252916).

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

6888899980 is a wasteful number, since it uses less digits than its factorization.

6888899980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236494 (or 236492 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 73.

The square root of 6888899980 is about 82999.3974676925. The cubic root of 6888899980 is about 1902.7568456067.

The spelling of 6888899980 in words is "six billion, eight hundred eighty-eight million, eight hundred ninety-nine thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 31 47 62 94 124 155 188 235 310 470 620 940 1457 2914 5828 7285 14570 29140 236407 472814 945628 1182035 2364070 4728140 7328617 11111129 14657234 22222258 29314468 36643085 44444516 55555645 73286170 111111290 146572340 222222580 344444999 688889998 1377779996 1722224995 3444449990 6888899980