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88652681 = 13291132081
BaseRepresentation
bin1010100100010…
…11101110001001
320011211000121122
411102023232021
5140143341211
612444045025
72124351425
oct522135611
9204730548
1088652681
1146051087
1225833775
131549c910
14bab9b85
157bb26db
hex548bb89

88652681 has 16 divisors (see below), whose sum is σ = 99686160. Its totient is φ = 78274560.

The previous prime is 88652621. The next prime is 88652687. The reversal of 88652681 is 18625688.

It can be written as a sum of positive squares in 8 ways, for example, as 25847056 + 62805625 = 5084^2 + 7925^2 .

It is not a de Polignac number, because 88652681 - 210 = 88651657 is a prime.

It is a super-2 number, since 2×886526812 = 15718595696975522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (88652687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41561 + ... + 43641.

It is an arithmetic number, because the mean of its divisors is an integer number (6230385).

Almost surely, 288652681 is an apocalyptic number.

It is an amenable number.

88652681 is a deficient number, since it is larger than the sum of its proper divisors (11033479).

88652681 is a wasteful number, since it uses less digits than its factorization.

88652681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its digits is 184320, while the sum is 44.

The square root of 88652681 is about 9415.5552677471. Note that the first 3 decimals coincide. The cubic root of 88652681 is about 445.8929693500.

It can be divided in two parts, 8865 and 2681, that multiplied together give a triangular number (23767065 = T6894).

The spelling of 88652681 in words is "eighty-eight million, six hundred fifty-two thousand, six hundred eighty-one".

Divisors: 1 13 29 113 377 1469 2081 3277 27053 42601 60349 235153 784537 3056989 6819437 88652681