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130388 = 2237881
BaseRepresentation
bin11111110101010100
320121212012
4133311110
513133023
62443352
71052066
oct376524
9217765
10130388
1189a65
1263558
134746b
1435736
1528978
hex1fd54

130388 has 12 divisors (see below), whose sum is σ = 234612. Its totient is φ = 63360.

The previous prime is 130379. The next prime is 130399. The reversal of 130388 is 883031.

It can be written as a sum of positive squares in 2 ways, for example, as 71824 + 58564 = 268^2 + 242^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (19551).

2130388 is an apocalyptic number.

It is an amenable number.

130388 is a deficient number, since it is larger than the sum of its proper divisors (104224).

130388 is a wasteful number, since it uses less digits than its factorization.

130388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 130388 is about 361.0927858598. The cubic root of 130388 is about 50.7083183200.

The spelling of 130388 in words is "one hundred thirty thousand, three hundred eighty-eight".

Divisors: 1 2 4 37 74 148 881 1762 3524 32597 65194 130388