Search a number
-
+
28805767653 = 313738609427
BaseRepresentation
bin11010110100111101…
…010010000111100101
32202100112010121120110
4122310331102013211
5432443234031103
621122211323233
72036555661615
oct326475220745
982315117513
1028805767653
1111242117653
1256babb0519
132940b3cc40
1415739baa45
15b38d7c403
hex6b4f521e5

28805767653 has 8 divisors (see below), whose sum is σ = 41362127968. Its totient is φ = 17726626224.

The previous prime is 28805767651. The next prime is 28805767673. The reversal of 28805767653 is 35676750882.

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

It is not a de Polignac number, because 28805767653 - 21 = 28805767651 is a prime.

It is a super-2 number, since 2×288057676532 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28805767593 and 28805767602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805767651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369304675 + ... + 369304752.

It is an arithmetic number, because the mean of its divisors is an integer number (5170265996).

Almost surely, 228805767653 is an apocalyptic number.

It is an amenable number.

28805767653 is a deficient number, since it is larger than the sum of its proper divisors (12556360315).

28805767653 is a wasteful number, since it uses less digits than its factorization.

28805767653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738609443.

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 28805767653 in words is "twenty-eight billion, eight hundred five million, seven hundred sixty-seven thousand, six hundred fifty-three".

Divisors: 1 3 13 39 738609427 2215828281 9601922551 28805767653