Search a number
-
+
13028886860 = 2251159222213
BaseRepresentation
bin11000010001001010…
…10000100101001100
31020122000011000210012
430020211100211030
5203140343334420
65552502132352
7640603465613
oct141045204514
936560130705
1013028886860
1155865155a0
1226374210b8
1312c8377112
148b852887a
15513c5adc5
hex30895094c

13028886860 has 24 divisors (see below), whose sum is σ = 29847995856. Its totient is φ = 4737776960.

The previous prime is 13028886859. The next prime is 13028886877. The reversal of 13028886860 is 6868882031.

It is a junction number, because it is equal to n+sod(n) for n = 13028886799 and 13028886808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29610887 + ... + 29611326.

It is an arithmetic number, because the mean of its divisors is an integer number (1243666494).

Almost surely, 213028886860 is an apocalyptic number.

13028886860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13028886860 is an abundant number, since it is smaller than the sum of its proper divisors (16819108996).

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

13028886860 is a wasteful number, since it uses less digits than its factorization.

13028886860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59222233 (or 59222231 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 13028886860 in words is "thirteen billion, twenty-eight million, eight hundred eighty-six thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 59222213 118444426 236888852 296111065 592222130 651444343 1184444260 1302888686 2605777372 3257221715 6514443430 13028886860