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103405220020 = 225109113033637
BaseRepresentation
bin110000001001101101…
…1100111000010110100
3100212220111011102221201
41200103123213002310
53143233214020040
6115300444422244
710320322603444
oct1402333470264
9325814142851
10103405220020
113a943607323
121805a247984
13999c14252b
14500d3ca124
152a53173a9a
hex18136e70b4

103405220020 has 48 divisors (see below), whose sum is σ = 217576614528. Its totient is φ = 41281107840.

The previous prime is 103405220003. The next prime is 103405220033. The reversal of 103405220020 is 20022504301.

It is a self number, because there is not a number n which added to its sum of digits gives 103405220020.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 28429642 + ... + 28433278.

It is an arithmetic number, because the mean of its divisors is an integer number (4532846136).

Almost surely, 2103405220020 is an apocalyptic number.

103405220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103405220020 is an abundant number, since it is smaller than the sum of its proper divisors (114171394508).

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

103405220020 is a wasteful number, since it uses less digits than its factorization.

103405220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

Adding to 103405220020 its reverse (20022504301), we get a palindrome (123427724321).

The spelling of 103405220020 in words is "one hundred three billion, four hundred five million, two hundred twenty thousand, twenty".

Divisors: 1 2 4 5 10 20 1091 1303 2182 2606 3637 4364 5212 5455 6515 7274 10910 13030 14548 18185 21820 26060 36370 72740 1421573 2843146 3967967 4739011 5686292 7107865 7935934 9478022 14215730 15871868 18956044 19839835 23695055 28431460 39679670 47390110 79359340 94780220 5170261001 10340522002 20681044004 25851305005 51702610010 103405220020