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6890484672 = 2637192591
BaseRepresentation
bin1100110101011010…
…00111001111000000
3122210012122220000000
412122231013033000
5103102431002142
63055423000000
7332516103411
oct63255071700
918705586000
106890484672
112a16554135
121403739000
1385a710386
144951ad808
152a4dd514c
hex19ab473c0

6890484672 has 224 divisors, whose sum is σ = 21594470400. Its totient is φ = 2175102720.

The previous prime is 6890484661. The next prime is 6890484697. The reversal of 6890484672 is 2764840986.

6890484672 is a `hidden beast` number, since 6 + 8 + 90 + 484 + 6 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2658097 + ... + 2660687.

Almost surely, 26890484672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6890484672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10797235200).

6890484672 is an abundant number, since it is smaller than the sum of its proper divisors (14703985728).

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

6890484672 is an equidigital number, since it uses as much as digits as its factorization.

6890484672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2643 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The square root of 6890484672 is about 83008.9433254032. The cubic root of 6890484672 is about 1902.9027350028.

The spelling of 6890484672 in words is "six billion, eight hundred ninety million, four hundred eighty-four thousand, six hundred seventy-two".