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108131020 = 22537473109
BaseRepresentation
bin1100111000111…
…11001011001100
321112110121212121
412130133023030
5210140143040
614421342324
72452045534
oct634371314
9245417777
10108131020
1156045488
12302679a4
131952c76a
141050a4c4
15975dc4a
hex671f2cc

108131020 has 48 divisors (see below), whose sum is σ = 238250880. Its totient is φ = 41174784.

The previous prime is 108131003. The next prime is 108131059. The reversal of 108131020 is 20131801.

It is a junction number, because it is equal to n+sod(n) for n = 108130985 and 108131003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33226 + ... + 36334.

It is an arithmetic number, because the mean of its divisors is an integer number (4963560).

Almost surely, 2108131020 is an apocalyptic number.

108131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108131020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119125440).

108131020 is an abundant number, since it is smaller than the sum of its proper divisors (130119860).

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

108131020 is a wasteful number, since it uses less digits than its factorization.

108131020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202 (or 3200 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 108131020 is about 10398.6066374298. The cubic root of 108131020 is about 476.4128130335.

Adding to 108131020 its reverse (20131801), we get a palindrome (128262821).

The spelling of 108131020 in words is "one hundred eight million, one hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 37 47 74 94 148 185 188 235 370 470 740 940 1739 3109 3478 6218 6956 8695 12436 15545 17390 31090 34780 62180 115033 146123 230066 292246 460132 575165 584492 730615 1150330 1461230 2300660 2922460 5406551 10813102 21626204 27032755 54065510 108131020