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8742808431 = 327138774737
BaseRepresentation
bin10000010010001110…
…01010101101101111
3211120022010200111200
420021013022231233
5120401124332211
64003312420543
7426440434260
oct101107125557
924508120450
108742808431
1137870a6415
12183bb47753
13a943c0436
145cd1c6967
15362826b56
hex2091cab6f

8742808431 has 12 divisors (see below), whose sum is σ = 14432572752. Its totient is φ = 4995890496.

The previous prime is 8742808411. The next prime is 8742808453. The reversal of 8742808431 is 1348082478.

8742808431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8742808431 - 219 = 8742284143 is a prime.

It is a super-2 number, since 2×87428084312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742808411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69387306 + ... + 69387431.

It is an arithmetic number, because the mean of its divisors is an integer number (1202714396).

Almost surely, 28742808431 is an apocalyptic number.

8742808431 is a deficient number, since it is larger than the sum of its proper divisors (5689764321).

8742808431 is a wasteful number, since it uses less digits than its factorization.

8742808431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138774750 (or 138774747 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 8742808431 is about 93502.9862143450. The cubic root of 8742808431 is about 2060.0779521669.

The spelling of 8742808431 in words is "eight billion, seven hundred forty-two million, eight hundred eight thousand, four hundred thirty-one".

Divisors: 1 3 7 9 21 63 138774737 416324211 971423159 1248972633 2914269477 8742808431