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130307885 = 526061577
BaseRepresentation
bin1111100010001…
…01011100101101
3100002012022210222
413301011130231
5231324323020
620532541125
73141412241
oct761053455
9302168728
10130307885
1167612274
12377817a5
1320cc5976
1413440421
15b68eb25
hex7c4572d

130307885 has 4 divisors (see below), whose sum is σ = 156369468. Its totient is φ = 104246304.

The previous prime is 130307803. The next prime is 130307897. The reversal of 130307885 is 588703031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588703031 = 784100433.

It can be written as a sum of positive squares in 2 ways, for example, as 64032004 + 66275881 = 8002^2 + 8141^2 .

It is a cyclic number.

It is not a de Polignac number, because 130307885 - 210 = 130306861 is a prime.

It is a Duffinian number.

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, 13030784 + ... + 13030793.

It is an arithmetic number, because the mean of its divisors is an integer number (39092367).

Almost surely, 2130307885 is an apocalyptic number.

It is an amenable number.

130307885 is a deficient number, since it is larger than the sum of its proper divisors (26061583).

130307885 is an equidigital number, since it uses as much as digits as its factorization.

130307885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26061582.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 130307885 is about 11415.2479167121. The cubic root of 130307885 is about 506.9793053057.

The spelling of 130307885 in words is "one hundred thirty million, three hundred seven thousand, eight hundred eighty-five".

Divisors: 1 5 26061577 130307885