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8021469853 = 181401911027
BaseRepresentation
bin1110111100001110…
…11110101010011101
3202201000210220000001
413132013132222131
5112411444013403
63403543534301
7402531240325
oct73607365235
922630726001
108021469853
113446a02031
12167a45a391
139aab1c587
14561496285
1531e33bc1d
hex1de1dea9d

8021469853 has 8 divisors (see below), whose sum is σ = 8068525920. Its totient is φ = 7974444240.

The previous prime is 8021469829. The next prime is 8021469889. The reversal of 8021469853 is 3589641208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8021469853 - 213 = 8021461661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021469893) 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, 721926 + ... + 732952.

It is an arithmetic number, because the mean of its divisors is an integer number (1008565740).

Almost surely, 28021469853 is an apocalyptic number.

It is an amenable number.

8021469853 is a deficient number, since it is larger than the sum of its proper divisors (47056067).

8021469853 is a wasteful number, since it uses less digits than its factorization.

8021469853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15227.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 8021469853 is about 89562.6588093498. The cubic root of 8021469853 is about 2001.7875562620.

The spelling of 8021469853 in words is "eight billion, twenty-one million, four hundred sixty-nine thousand, eight hundred fifty-three".

Divisors: 1 181 4019 11027 727439 1995887 44317513 8021469853