Base | Representation |
---|---|
bin | 10111001101000001… |
… | …00100100001100000 |
3 | 1012011011110222101202 |
4 | 23212200210201200 |
5 | 201003022414410 |
6 | 5420041420332 |
7 | 620462505020 |
oct | 134640444140 |
9 | 35134428352 |
10 | 12457232480 |
11 | 5312868160 |
12 | 24b7a9a6a8 |
13 | 1236ac44a4 |
14 | 86263da80 |
15 | 4cd98bca5 |
hex | 2e6824860 |
12457232480 has 96 divisors (see below), whose sum is σ = 36692248320. Its totient is φ = 3882769920.
The previous prime is 12457232471. The next prime is 12457232497. The reversal of 12457232480 is 8423275421.
It is a happy number.
It is a congruent number.
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, 493250 + ... + 517889.
It is an arithmetic number, because the mean of its divisors is an integer number (382210920).
Almost surely, 212457232480 is an apocalyptic number.
12457232480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12457232480 is an abundant number, since it is smaller than the sum of its proper divisors (24235015840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12457232480 is a wasteful number, since it uses less digits than its factorization.
12457232480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1011172 (or 1011164 counting only the distinct ones).
The product of its (nonzero) digits is 107520, while the sum is 38.
The spelling of 12457232480 in words is "twelve billion, four hundred fifty-seven million, two hundred thirty-two thousand, four hundred eighty".
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