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30061080 = 23325779151
BaseRepresentation
bin111001010101…
…1001000011000
32002120021001100
41302223020120
530143423310
62552151400
7513341430
oct162531030
962507040
1030061080
1115a72375
12a098560
1362c6a2a
143dc72c0
15298bec0
hex1cab218

30061080 has 192 divisors, whose sum is σ = 113817600. Its totient is φ = 6739200.

The previous prime is 30061079. The next prime is 30061111. The reversal of 30061080 is 8016003.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199005 + ... + 199155.

It is an arithmetic number, because the mean of its divisors is an integer number (592800).

Almost surely, 230061080 is an apocalyptic number.

30061080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30061080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56908800).

30061080 is an abundant number, since it is smaller than the sum of its proper divisors (83756520).

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

30061080 is a wasteful number, since it uses less digits than its factorization.

30061080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30061080 is about 5482.7985554824. The cubic root of 30061080 is about 310.9339851542.

Adding to 30061080 its reverse (8016003), we get a palindrome (38077083).

The spelling of 30061080 in words is "thirty million, sixty-one thousand, eighty".