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130863860 = 2256543193
BaseRepresentation
bin1111100110011…
…01001011110100
3100010020120110122
413303031023310
5232000120420
620552511112
73146216201
oct763151364
9303216418
10130863860
1167961a56
12379ab498
132115ba4a
1413546ca8
15b74e725
hex7ccd2f4

130863860 has 12 divisors (see below), whose sum is σ = 274814148. Its totient is φ = 52345536.

The previous prime is 130863791. The next prime is 130863877. The reversal of 130863860 is 68368031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65480464 + 65383396 = 8092^2 + 8086^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130863860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3271577 + ... + 3271616.

It is an arithmetic number, because the mean of its divisors is an integer number (22901179).

Almost surely, 2130863860 is an apocalyptic number.

130863860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130863860 is an abundant number, since it is smaller than the sum of its proper divisors (143950288).

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

130863860 is a wasteful number, since it uses less digits than its factorization.

130863860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543202 (or 6543200 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 130863860 is about 11439.5742927786. The cubic root of 130863860 is about 507.6993126226.

The spelling of 130863860 in words is "one hundred thirty million, eight hundred sixty-three thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 6543193 13086386 26172772 32715965 65431930 130863860