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12970344448 = 2143125537
BaseRepresentation
bin11000001010001011…
…11100000000000000
31020110220222202200201
430011011330000000
5203030402010243
65543011254544
7636263052205
oct140505740000
936426882621
1012970344448
11555646a836
12261b8aa454
1312b91ba739
148b0849cac
1550da4504d
hex30517c000

12970344448 has 60 divisors (see below), whose sum is σ = 26777716672. Its totient is φ = 6275727360.

The previous prime is 12970344389. The next prime is 12970344449. The reversal of 12970344448 is 84444307921.

It is a junction number, because it is equal to n+sod(n) for n = 12970344398 and 12970344407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12970344449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495136 + ... + 520672.

Almost surely, 212970344448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12970344448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13388858336).

12970344448 is an abundant number, since it is smaller than the sum of its proper divisors (13807372224).

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

12970344448 is an frugal number, since it uses more digits than its factorization.

12970344448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25596 (or 25570 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 12970344448 in words is "twelve billion, nine hundred seventy million, three hundred forty-four thousand, four hundred forty-eight".

Divisors: 1 2 4 8 16 31 32 62 64 124 128 248 256 496 512 992 1024 1984 2048 3968 4096 7936 8192 15872 16384 25537 31744 51074 63488 102148 126976 204296 253952 408592 507904 791647 817184 1583294 1634368 3166588 3268736 6333176 6537472 12666352 13074944 25332704 26149888 50665408 52299776 101330816 104599552 202661632 209199104 405323264 418398208 810646528 1621293056 3242586112 6485172224 12970344448