Search a number
-
+
12880462816 = 251334998849
BaseRepresentation
bin10111111111011110…
…00100001111100000
31020020122212022021101
423333233010033200
5202334344302231
65530041004144
7634122061504
oct137757041740
936218768241
1012880462816
11550a75a3a1
1225b5783654
1312a36aa640
148a2930304
15505bdd661
hex2ffbc43e0

12880462816 has 48 divisors (see below), whose sum is σ = 27319950000. Its totient is φ = 5942458368.

The previous prime is 12880462813. The next prime is 12880462841. The reversal of 12880462816 is 61826408821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880462813) 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, 1451160 + ... + 1460008.

It is an arithmetic number, because the mean of its divisors is an integer number (569165625).

Almost surely, 212880462816 is an apocalyptic number.

12880462816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12880462816 is an abundant number, since it is smaller than the sum of its proper divisors (14439487184).

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

12880462816 is a wasteful number, since it uses less digits than its factorization.

12880462816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371 (or 12363 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 46.

The spelling of 12880462816 in words is "twelve billion, eight hundred eighty million, four hundred sixty-two thousand, eight hundred sixteen".

Divisors: 1 2 4 8 13 16 26 32 52 104 208 416 3499 6998 8849 13996 17698 27992 35396 45487 55984 70792 90974 111968 115037 141584 181948 230074 283168 363896 460148 727792 920296 1455584 1840592 3681184 30962651 61925302 123850604 247701208 402514463 495402416 805028926 990804832 1610057852 3220115704 6440231408 12880462816