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130315860 = 22325723977
BaseRepresentation
bin1111100010001…
…11011001010100
3100002012201202100
413301013121110
5231330101420
620533042100
73141444423
oct761073124
9302181670
10130315860
1167618264
1237786330
1320cc949c
14134432ba
15b692190
hex7c47654

130315860 has 36 divisors (see below), whose sum is σ = 395291988. Its totient is φ = 34750848.

The previous prime is 130315859. The next prime is 130315873. The reversal of 130315860 is 68513031.

It can be written as a sum of positive squares in 2 ways, for example, as 52099524 + 78216336 = 7218^2 + 8844^2 .

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

It is a congruent number.

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, 361809 + ... + 362168.

It is an arithmetic number, because the mean of its divisors is an integer number (10980333).

Almost surely, 2130315860 is an apocalyptic number.

130315860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130315860 is an abundant number, since it is smaller than the sum of its proper divisors (264976128).

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

130315860 is a wasteful number, since it uses less digits than its factorization.

130315860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723992 (or 723987 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 130315860 is about 11415.5972248499. The cubic root of 130315860 is about 506.9896476768.

Adding to 130315860 its reverse (68513031), we get a palindrome (198828891).

The spelling of 130315860 in words is "one hundred thirty million, three hundred fifteen thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 723977 1447954 2171931 2895908 3619885 4343862 6515793 7239770 8687724 10859655 13031586 14479540 21719310 26063172 32578965 43438620 65157930 130315860