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12528030 = 2351931709
BaseRepresentation
bin101111110010…
…100110011110
3212120111020010
4233302212132
511201344110
61124304050
7211325604
oct57624636
925514203
1012528030
117087549
124242026
132798448
141941874
151177020
hexbf299e

12528030 has 64 divisors (see below), whose sum is σ = 32716800. Its totient is φ = 3058560.

The previous prime is 12527987. The next prime is 12528037. The reversal of 12528030 is 3082521.

It is a junction number, because it is equal to n+sod(n) for n = 12527988 and 12528006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17316 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (511200).

Almost surely, 212528030 is an apocalyptic number.

12528030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12528030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16358400).

12528030 is an abundant number, since it is smaller than the sum of its proper divisors (20188770).

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

12528030 is a wasteful number, since it uses less digits than its factorization.

12528030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12528030 is about 3539.4957267950. The cubic root of 12528030 is about 232.2527838243.

The spelling of 12528030 in words is "twelve million, five hundred twenty-eight thousand, thirty".

Divisors: 1 2 3 5 6 10 15 19 30 31 38 57 62 93 95 114 155 186 190 285 310 465 570 589 709 930 1178 1418 1767 2127 2945 3534 3545 4254 5890 7090 8835 10635 13471 17670 21270 21979 26942 40413 43958 65937 67355 80826 109895 131874 134710 202065 219790 329685 404130 417601 659370 835202 1252803 2088005 2505606 4176010 6264015 12528030