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104405540 = 2255220277
BaseRepresentation
bin1100011100100…
…01101000100100
321021110100110212
412032101220210
5203211434130
614205434552
72405301221
oct616215044
9237410425
10104405540
1153a30478
122ab6ba58
1318826b35
14dc1a948
159274e95
hex6391a24

104405540 has 12 divisors (see below), whose sum is σ = 219251676. Its totient is φ = 41762208.

The previous prime is 104405537. The next prime is 104405573. The reversal of 104405540 is 45504401.

It can be written as a sum of positive squares in 2 ways, for example, as 17505856 + 86899684 = 4184^2 + 9322^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2610119 + ... + 2610158.

It is an arithmetic number, because the mean of its divisors is an integer number (18270973).

Almost surely, 2104405540 is an apocalyptic number.

104405540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104405540 is an abundant number, since it is smaller than the sum of its proper divisors (114846136).

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

104405540 is a wasteful number, since it uses less digits than its factorization.

104405540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220286 (or 5220284 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 104405540 is about 10217.9029159608. The cubic root of 104405540 is about 470.8774013277.

Adding to 104405540 its reverse (45504401), we get a palindrome (149909941).

The spelling of 104405540 in words is "one hundred four million, four hundred five thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 5220277 10440554 20881108 26101385 52202770 104405540