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101230660 = 2255061533
BaseRepresentation
bin1100000100010…
…10100001000100
321001111001100201
412002022201010
5201403340120
614013420244
72336306056
oct602124104
9231431321
10101230660
1152162103
1229a9a684
1317c849cb
14d6318d6
158d4940a
hex608a844

101230660 has 12 divisors (see below), whose sum is σ = 212584428. Its totient is φ = 40492256.

The previous prime is 101230639. The next prime is 101230663. The reversal of 101230660 is 66032101.

It can be written as a sum of positive squares in 2 ways, for example, as 73856836 + 27373824 = 8594^2 + 5232^2 .

It is not an unprimeable number, because it can be changed into a prime (101230663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2530747 + ... + 2530786.

It is an arithmetic number, because the mean of its divisors is an integer number (17715369).

Almost surely, 2101230660 is an apocalyptic number.

101230660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101230660 is an abundant number, since it is smaller than the sum of its proper divisors (111353768).

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

101230660 is a wasteful number, since it uses less digits than its factorization.

101230660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061542 (or 5061540 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 101230660 is about 10061.3448405270. The cubic root of 101230660 is about 466.0551980149.

Adding to 101230660 its reverse (66032101), we get a palindrome (167262761).

The spelling of 101230660 in words is "one hundred one million, two hundred thirty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 5061533 10123066 20246132 25307665 50615330 101230660