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108408420 = 22325602269
BaseRepresentation
bin1100111011000…
…10111001100100
321112222201101200
412131202321210
5210223032140
614431322500
72454312351
oct635427144
9245881350
10108408420
115621493a
1230380430
13195c8ac3
141057d628
1597b6030
hex6762e64

108408420 has 36 divisors (see below), whose sum is σ = 328839420. Its totient is φ = 28908864.

The previous prime is 108408413. The next prime is 108408449. The reversal of 108408420 is 24804801.

It can be written as a sum of positive squares in 2 ways, for example, as 30404196 + 78004224 = 5514^2 + 8832^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300955 + ... + 301314.

Almost surely, 2108408420 is an apocalyptic number.

108408420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108408420 is an abundant number, since it is smaller than the sum of its proper divisors (220431000).

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

108408420 is a wasteful number, since it uses less digits than its factorization.

108408420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602284 (or 602279 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 108408420 is about 10411.9364193218. The cubic root of 108408420 is about 476.8198626265.

The spelling of 108408420 in words is "one hundred eight million, four hundred eight thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 602269 1204538 1806807 2409076 3011345 3613614 5420421 6022690 7227228 9034035 10840842 12045380 18068070 21681684 27102105 36136140 54204210 108408420