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104068820 = 22529179429
BaseRepresentation
bin1100011001111…
…11011011010100
321020211020120202
412030333123110
5203120200240
614154320032
72402366432
oct614773324
9236736522
10104068820
1153820499
122aa29018
13187397ab
14db6dd52
15920a315
hex633f6d4

104068820 has 24 divisors (see below), whose sum is σ = 226081800. Its totient is φ = 40191872.

The previous prime is 104068807. The next prime is 104068843. The reversal of 104068820 is 28860401.

It can be written as a sum of positive squares in 4 ways, for example, as 14122564 + 89946256 = 3758^2 + 9484^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89135 + ... + 90294.

It is an arithmetic number, because the mean of its divisors is an integer number (9420075).

Almost surely, 2104068820 is an apocalyptic number.

104068820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104068820 is an abundant number, since it is smaller than the sum of its proper divisors (122012980).

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

104068820 is a wasteful number, since it uses less digits than its factorization.

104068820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179467 (or 179465 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 104068820 is about 10201.4126472759. The cubic root of 104068820 is about 470.3706447062.

The spelling of 104068820 in words is "one hundred four million, sixty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 179429 358858 717716 897145 1794290 3588580 5203441 10406882 20813764 26017205 52034410 104068820