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128106104 = 2373736133
BaseRepresentation
bin1111010001010…
…11111001111000
322221001110112112
413220223321320
5230243343404
620413431452
73113612120
oct750537170
9287043475
10128106104
1166349015
1236a9b588
1320704739
1413029c80
15b3a756e
hex7a2be78

128106104 has 32 divisors (see below), whose sum is σ = 275293920. Its totient is φ = 54746496.

The previous prime is 128106103. The next prime is 128106107. The reversal of 128106104 is 401601821.

It is a super-2 number, since 2×1281061042 = 32822347764117632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128106104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128106103) 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, 17822 + ... + 23954.

It is an arithmetic number, because the mean of its divisors is an integer number (8602935).

Almost surely, 2128106104 is an apocalyptic number.

128106104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128106104 is an abundant number, since it is smaller than the sum of its proper divisors (147187816).

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

128106104 is a wasteful number, since it uses less digits than its factorization.

128106104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6519 (or 6515 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 128106104 is about 11318.3967062478. The cubic root of 128106104 is about 504.1076342724.

Adding to 128106104 its reverse (401601821), we get a palindrome (529707925).

The spelling of 128106104 in words is "one hundred twenty-eight million, one hundred six thousand, one hundred four".

Divisors: 1 2 4 7 8 14 28 56 373 746 1492 2611 2984 5222 6133 10444 12266 20888 24532 42931 49064 85862 171724 343448 2287609 4575218 9150436 16013263 18300872 32026526 64053052 128106104