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61004680 = 23511138647
BaseRepresentation
bin1110100010110…
…1101110001000
311020210100200121
43220231232020
5111104122210
610015313024
71340350132
oct350555610
9136710617
1061004680
11314877a0
121851b774
13c83c359
148160052
1555506da
hex3a2db88

61004680 has 32 divisors (see below), whose sum is σ = 149739840. Its totient is φ = 22183360.

The previous prime is 61004663. The next prime is 61004681. The reversal of 61004680 is 8640016.

61004680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61004681) 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 7 ways as a sum of consecutive naturals, for example, 68884 + ... + 69763.

It is an arithmetic number, because the mean of its divisors is an integer number (4679370).

Almost surely, 261004680 is an apocalyptic number.

It is an amenable number.

61004680 is an abundant number, since it is smaller than the sum of its proper divisors (88735160).

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

61004680 is a wasteful number, since it uses less digits than its factorization.

61004680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138669 (or 138665 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 61004680 is about 7810.5492764594. The cubic root of 61004680 is about 393.6597851603.

Adding to 61004680 its reverse (8640016), we get a palindrome (69644696).

The spelling of 61004680 in words is "sixty-one million, four thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 138647 277294 554588 693235 1109176 1386470 1525117 2772940 3050234 5545880 6100468 7625585 12200936 15251170 30502340 61004680