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130513540 = 2256525677
BaseRepresentation
bin1111100011101…
…11101010000100
3100002120202220211
413301313222010
5231402413130
620541205204
73143226643
oct761675204
9302522824
10130513540
1167742833
1237860804
1321068461
141349535a
15b6d0a2a
hex7c77a84

130513540 has 12 divisors (see below), whose sum is σ = 274078476. Its totient is φ = 52205408.

The previous prime is 130513519. The next prime is 130513567. The reversal of 130513540 is 45315031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 88962624 + 41550916 = 9432^2 + 6446^2 .

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, 3262819 + ... + 3262858.

It is an arithmetic number, because the mean of its divisors is an integer number (22839873).

Almost surely, 2130513540 is an apocalyptic number.

130513540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130513540 is an abundant number, since it is smaller than the sum of its proper divisors (143564936).

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

130513540 is a wasteful number, since it uses less digits than its factorization.

130513540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525686 (or 6525684 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 130513540 is about 11424.2522731249. The cubic root of 130513540 is about 507.2458740480.

Adding to 130513540 its reverse (45315031), we get a palindrome (175828571).

The spelling of 130513540 in words is "one hundred thirty million, five hundred thirteen thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 6525677 13051354 26102708 32628385 65256770 130513540