Search a number
-
+
28975931054 = 275393383777
BaseRepresentation
bin11010111111000110…
…011001111010101110
32202210101022210212122
4122333012121322232
5433320314243204
621151130432542
72044023231050
oct327706317256
982711283778
1028975931054
111131a180964
125747b92752
13296a17b745
14158c4338d0
15b48c910be
hex6bf199eae

28975931054 has 16 divisors (see below), whose sum is σ = 49682364768. Its totient is φ = 12415921152.

The previous prime is 28975931041. The next prime is 28975931059. The reversal of 28975931054 is 45013957982.

It is a junction number, because it is equal to n+sod(n) for n = 28975930987 and 28975931005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28975931059) 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, 116387 + ... + 267390.

It is an arithmetic number, because the mean of its divisors is an integer number (3105147798).

Almost surely, 228975931054 is an apocalyptic number.

28975931054 is a deficient number, since it is larger than the sum of its proper divisors (20706433714).

28975931054 is a wasteful number, since it uses less digits than its factorization.

28975931054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389179.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The spelling of 28975931054 in words is "twenty-eight billion, nine hundred seventy-five million, nine hundred thirty-one thousand, fifty-four".

Divisors: 1 2 7 14 5393 10786 37751 75502 383777 767554 2686439 5372878 2069709361 4139418722 14487965527 28975931054