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1307800051 = 4729639391
BaseRepresentation
bin100110111110011…
…0111000111110011
310101010212010101221
41031330313013303
510134244100201
6333434405511
744260055065
oct11574670763
93333763357
101307800051
11611245598
12305b90897
1317ac393ac
14c5991735
1579c314a1
hex4df371f3

1307800051 has 8 divisors (see below), whose sum is σ = 1336218624. Its totient is φ = 1279406280.

The previous prime is 1307800031. The next prime is 1307800061. The reversal of 1307800051 is 1500087031.

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 1307800051 - 219 = 1307275763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1307799989 and 1307800025.

It is not an unprimeable number, because it can be changed into a prime (1307800031) 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, 134566 + ... + 143956.

It is an arithmetic number, because the mean of its divisors is an integer number (167027328).

Almost surely, 21307800051 is an apocalyptic number.

1307800051 is a deficient number, since it is larger than the sum of its proper divisors (28418573).

1307800051 is an equidigital number, since it uses as much as digits as its factorization.

1307800051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1307800051 is about 36163.5182331587. The cubic root of 1307800051 is about 1093.5713319649.

Adding to 1307800051 its reverse (1500087031), we get a palindrome (2807887082).

The spelling of 1307800051 in words is "one billion, three hundred seven million, eight hundred thousand, fifty-one".

Divisors: 1 47 2963 9391 139261 441377 27825533 1307800051