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8006915642 = 211421864491
BaseRepresentation
bin1110111010011111…
…11101011000111010
3202200000102110101012
413131033331120322
5112344232300032
63402303553522
7402263442245
oct73517753072
922600373335
108006915642
113439771260
1216755bb8a2
139a7ac4b0b
1455d58825c
1531ce146b2
hex1dd3fd63a

8006915642 has 16 divisors (see below), whose sum is σ = 13133362464. Its totient is φ = 3630858000.

The previous prime is 8006915639. The next prime is 8006915669. The reversal of 8006915642 is 2465196008.

It is a happy number.

It is a super-2 number, since 2×80069156422 (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8006915642.

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, 422984 + ... + 441507.

It is an arithmetic number, because the mean of its divisors is an integer number (820835154).

Almost surely, 28006915642 is an apocalyptic number.

8006915642 is a deficient number, since it is larger than the sum of its proper divisors (5126446822).

8006915642 is a wasteful number, since it uses less digits than its factorization.

8006915642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864925.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 8006915642 is about 89481.3703627744. The cubic root of 8006915642 is about 2000.5761375168.

The spelling of 8006915642 in words is "eight billion, six million, nine hundred fifteen thousand, six hundred forty-two".

Divisors: 1 2 11 22 421 842 4631 9262 864491 1728982 9509401 19018802 363950711 727901422 4003457821 8006915642