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130857897 = 3107407657
BaseRepresentation
bin1111100110010…
…11101110101001
3100010020021021210
413303023232221
5231444423042
620552423333
73146162622
oct763135651
9303207253
10130857897
1167958525
12379a7b49
1321159111
1413544a49
15b74ca9c
hex7ccbba9

130857897 has 8 divisors (see below), whose sum is σ = 176108256. Its totient is φ = 86423072.

The previous prime is 130857893. The next prime is 130857911. The reversal of 130857897 is 798758031.

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 130857897 - 22 = 130857893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130857893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203508 + ... + 204149.

It is an arithmetic number, because the mean of its divisors is an integer number (22013532).

Almost surely, 2130857897 is an apocalyptic number.

It is an amenable number.

130857897 is a deficient number, since it is larger than the sum of its proper divisors (45250359).

130857897 is a wasteful number, since it uses less digits than its factorization.

130857897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407767.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 130857897 is about 11439.3136594815. The cubic root of 130857897 is about 507.6916011557.

The spelling of 130857897 in words is "one hundred thirty million, eight hundred fifty-seven thousand, eight hundred ninety-seven".

Divisors: 1 3 107 321 407657 1222971 43619299 130857897