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15015105028 = 2271148750341
BaseRepresentation
bin11011111101111100…
…00101001000000100
31102202102120100220001
431332332011020010
5221222331330103
610521533451044
71041042200260
oct157676051004
942672510801
1015015105028
1164056a9710
122ab0640a84
131553a07441
14a262370a0
155cd2ea01d
hex37ef85204

15015105028 has 24 divisors (see below), whose sum is σ = 32760229824. Its totient is φ = 5850040800.

The previous prime is 15015104983. The next prime is 15015105029. The reversal of 15015105028 is 82050151051.

15015105028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 15015104987 and 15015105005.

It is not an unprimeable number, because it can be changed into a prime (15015105029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24374863 + ... + 24375478.

It is an arithmetic number, because the mean of its divisors is an integer number (1365009576).

Almost surely, 215015105028 is an apocalyptic number.

It is an amenable number.

15015105028 is an abundant number, since it is smaller than the sum of its proper divisors (17745124796).

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

15015105028 is a wasteful number, since it uses less digits than its factorization.

15015105028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48750363 (or 48750361 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 15015105028 its reverse (82050151051), we get a palindrome (97065256079).

The spelling of 15015105028 in words is "fifteen billion, fifteen million, one hundred five thousand, twenty-eight".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 48750341 97500682 195001364 341252387 536253751 682504774 1072507502 1365009548 2145015004 3753776257 7507552514 15015105028