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130491408 = 2432718571
BaseRepresentation
bin1111100011100…
…10010000010000
3100002112122120010
413301302100100
5231401211113
620540514520
73143105265
oct761622020
9302478503
10130491408
1167728143
123784ba40
132105b368
141348b26c
15b6c91c3
hex7c72410

130491408 has 20 divisors (see below), whose sum is σ = 337102928. Its totient is φ = 43497120.

The previous prime is 130491401. The next prime is 130491419. The reversal of 130491408 is 804194031.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (130491401) by changing a digit.

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, 1359238 + ... + 1359333.

Almost surely, 2130491408 is an apocalyptic number.

It is an amenable number.

130491408 is an abundant number, since it is smaller than the sum of its proper divisors (206611520).

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

130491408 is a wasteful number, since it uses less digits than its factorization.

130491408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718582 (or 2718576 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 130491408 is about 11423.2835909821. The cubic root of 130491408 is about 507.2172001385.

The spelling of 130491408 in words is "one hundred thirty million, four hundred ninety-one thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 2718571 5437142 8155713 10874284 16311426 21748568 32622852 43497136 65245704 130491408