Search a number
-
+
12670485920 = 255194167923
BaseRepresentation
bin10111100110011100…
…00100010110100000
31012201000202101010022
423303032010112200
5201422121022140
65453140253012
7625662232121
oct136316042640
935630671108
1012670485920
115412182674
1225573a1168
13126c03c161
14882ab2048
154e25630b5
hex2f33845a0

12670485920 has 48 divisors (see below), whose sum is σ = 31509505440. Its totient is φ = 4801446144.

The previous prime is 12670485907. The next prime is 12670485923. The reversal of 12670485920 is 2958407621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12670485923) 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, 2080922 + ... + 2087001.

It is an arithmetic number, because the mean of its divisors is an integer number (656448030).

Almost surely, 212670485920 is an apocalyptic number.

12670485920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12670485920 is an abundant number, since it is smaller than the sum of its proper divisors (18839019520).

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

12670485920 is a wasteful number, since it uses less digits than its factorization.

12670485920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167957 (or 4167949 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 12670485920 in words is "twelve billion, six hundred seventy million, four hundred eighty-five thousand, nine hundred twenty".

Divisors: 1 2 4 5 8 10 16 19 20 32 38 40 76 80 95 152 160 190 304 380 608 760 1520 3040 4167923 8335846 16671692 20839615 33343384 41679230 66686768 79190537 83358460 133373536 158381074 166716920 316762148 333433840 395952685 633524296 666867680 791905370 1267048592 1583810740 2534097184 3167621480 6335242960 12670485920