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8021469852 = 223711312689
BaseRepresentation
bin1110111100001110…
…11110101010011100
3202201000210220000000
413132013132222130
5112411444013402
63403543534300
7402531240324
oct73607365234
922630726000
108021469852
113446a02030
12167a45a390
139aab1c586
14561496284
1531e33bc1c
hex1de1dea9c

8021469852 has 192 divisors, whose sum is σ = 23716761600. Its totient is φ = 2351462400.

The previous prime is 8021469829. The next prime is 8021469889. The reversal of 8021469852 is 2589641208.

It is a junction number, because it is equal to n+sod(n) for n = 8021469798 and 8021469807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2981724 + ... + 2984412.

It is an arithmetic number, because the mean of its divisors is an integer number (123524800).

Almost surely, 28021469852 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 8021469852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11858380800).

8021469852 is an abundant number, since it is smaller than the sum of its proper divisors (15695291748).

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

8021469852 is a wasteful number, since it uses less digits than its factorization.

8021469852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2756 (or 2736 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 8021469852 is about 89562.6588037671. The cubic root of 8021469852 is about 2001.7875561788.

The spelling of 8021469852 in words is "eight billion, twenty-one million, four hundred sixty-nine thousand, eight hundred fifty-two".