Search a number
-
+
26921794956 = 2237476819097
BaseRepresentation
bin11001000100101010…
…011111110110001100
32120111020002212212220
4121010222133312030
5420113434414311
620211231255340
71642101324060
oct310452376614
976436085786
1026921794956
1110465719021
12527407a550
13270072b4b4
1414356c5aa0
15a78788206
hex644a9fd8c

26921794956 has 48 divisors (see below), whose sum is σ = 73318941696. Its totient is φ = 7528281984.

The previous prime is 26921794919. The next prime is 26921794967. The reversal of 26921794956 is 65949712962.

It is a self number, because there is not a number n which added to its sum of digits gives 26921794956.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3405601 + ... + 3413496.

It is an arithmetic number, because the mean of its divisors is an integer number (1527477952).

Almost surely, 226921794956 is an apocalyptic number.

It is an amenable number.

26921794956 is an abundant number, since it is smaller than the sum of its proper divisors (46397146740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26921794956 is a wasteful number, since it uses less digits than its factorization.

26921794956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6819158 (or 6819156 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 60.

The spelling of 26921794956 in words is "twenty-six billion, nine hundred twenty-one million, seven hundred ninety-four thousand, nine hundred fifty-six".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 47 84 94 141 188 282 329 564 658 987 1316 1974 3948 6819097 13638194 20457291 27276388 40914582 47733679 81829164 95467358 143201037 190934716 286402074 320497559 572804148 640995118 961492677 1281990236 1922985354 2243482913 3845970708 4486965826 6730448739 8973931652 13460897478 26921794956