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8142215052 = 2231223955439
BaseRepresentation
bin1111001010101000…
…00101011110001100
3210000110000101021110
413211110011132030
5113133401340202
63423535532020
7405525454206
oct74524053614
923013011243
108142215052
1134a9082754
1216b298a010
139c9b4773a
14573527776
15329c3d26c
hex1e550578c

8142215052 has 24 divisors (see below), whose sum is σ = 19000396800. Its totient is φ = 2713800976.

The previous prime is 8142215033. The next prime is 8142215063. The reversal of 8142215052 is 2505122418.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119149 + ... + 174587.

It is an arithmetic number, because the mean of its divisors is an integer number (791683200).

Almost surely, 28142215052 is an apocalyptic number.

It is an amenable number.

8142215052 is an abundant number, since it is smaller than the sum of its proper divisors (10858181748).

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

8142215052 is a wasteful number, since it uses less digits than its factorization.

8142215052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67685 (or 67683 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 8142215052 is about 90234.2232858465. The cubic root of 8142215052 is about 2011.7817136612.

The spelling of 8142215052 in words is "eight billion, one hundred forty-two million, two hundred fifteen thousand, fifty-two".

Divisors: 1 2 3 4 6 12 12239 24478 36717 48956 55439 73434 110878 146868 166317 221756 332634 665268 678517921 1357035842 2035553763 2714071684 4071107526 8142215052