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130623657 = 383524593
BaseRepresentation
bin1111100100100…
…10100010101001
3100002210100222020
413302102202221
5231414424112
620543415053
73144165663
oct762224251
9302710866
10130623657
116780853a
12378b4489
13210a6608
14134c3533
15b70348c
hex7c928a9

130623657 has 8 divisors (see below), whose sum is σ = 176263584. Its totient is φ = 86033088.

The previous prime is 130623617. The next prime is 130623659. The reversal of 130623657 is 756326031.

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

It is not a de Polignac number, because 130623657 - 210 = 130622633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130623659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262048 + ... + 262545.

It is an arithmetic number, because the mean of its divisors is an integer number (22032948).

Almost surely, 2130623657 is an apocalyptic number.

It is an amenable number.

130623657 is a deficient number, since it is larger than the sum of its proper divisors (45639927).

130623657 is an equidigital number, since it uses as much as digits as its factorization.

130623657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524679.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 130623657 is about 11429.0706971302. The cubic root of 130623657 is about 507.3884919256.

Adding to 130623657 its reverse (756326031), we get a palindrome (886949688).

The spelling of 130623657 in words is "one hundred thirty million, six hundred twenty-three thousand, six hundred fifty-seven".

Divisors: 1 3 83 249 524593 1573779 43541219 130623657