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130825679 = 238368531
BaseRepresentation
bin1111100110000…
…11110111001111
3100010011122002112
413303003313033
5231442410204
620552014235
73145666655
oct763036717
9303148075
10130825679
11679362a6
123799137b
132114755a
1413536dd5
15b74326e
hex7cc3dcf

130825679 has 8 divisors (see below), whose sum is σ = 138160512. Its totient is φ = 123628120.

The previous prime is 130825661. The next prime is 130825687. The reversal of 130825679 is 976528031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130825679 - 216 = 130760143 is a prime.

It is a super-2 number, since 2×1308256792 = 34230716571622082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130825609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32357 + ... + 36174.

It is an arithmetic number, because the mean of its divisors is an integer number (17270064).

Almost surely, 2130825679 is an apocalyptic number.

130825679 is a deficient number, since it is larger than the sum of its proper divisors (7334833).

130825679 is an equidigital number, since it uses as much as digits as its factorization.

130825679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68637.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 130825679 is about 11437.9053589370. The cubic root of 130825679 is about 507.6499321622.

The spelling of 130825679 in words is "one hundred thirty million, eight hundred twenty-five thousand, six hundred seventy-nine".

Divisors: 1 23 83 1909 68531 1576213 5688073 130825679