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136648180 = 22542116229
BaseRepresentation
bin10000010010100…
…01010111110100
3100112010110001201
420021101113310
5234440220210
621320502244
73246330124
oct1011212764
9315113051
10136648180
1170152889
123991a984
1322405816
1414210c84
15bee353a
hex82515f4

136648180 has 24 divisors (see below), whose sum is σ = 287660520. Its totient is φ = 54526080.

The previous prime is 136648163. The next prime is 136648181. The reversal of 136648180 is 81846631.

It can be written as a sum of positive squares in 4 ways, for example, as 10265616 + 126382564 = 3204^2 + 11242^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136648181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306 + ... + 16534.

It is an arithmetic number, because the mean of its divisors is an integer number (11985855).

Almost surely, 2136648180 is an apocalyptic number.

136648180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136648180 is an abundant number, since it is smaller than the sum of its proper divisors (151012340).

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

136648180 is a wasteful number, since it uses less digits than its factorization.

136648180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16659 (or 16657 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 136648180 is about 11689.6612440224. The cubic root of 136648180 is about 515.0720105420.

It can be divided in two parts, 1366481 and 80, that added together give a square (1366561 = 11692).

The spelling of 136648180 in words is "one hundred thirty-six million, six hundred forty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 421 842 1684 2105 4210 8420 16229 32458 64916 81145 162290 324580 6832409 13664818 27329636 34162045 68324090 136648180